STO Express Tracking

Please enter the STO Express tracking number to check the latest shipping status.

http://www.sto.cn/

TRACK

About STO Express

STO Express is a China-based express carrier commonly known in Chinese as 申通快递. STO Express primarily handles domestic parcel pickup, sorting, trunk transportation and delivery inside mainland China, and may also appear in cross-border tracking where a seller, consolidator or partner uses STO Express for the China-origin leg or China last-mile leg.

STO Express Overview

Field	Verified information
Official name	STO Express; Chinese brand name: 申通快递
Official website	http://www.sto.cn/
Carrier type	Express parcel carrier and logistics service provider
Primary region	Mainland China, with cross-border visibility depending on the shipper service and partner network
Tracking page	STO Express official tracking and service portal
Parent organization	Publicly associated with STO Express Co., Ltd. / 申通快递股份有限公司
Founded and headquarters	Founded and headquarters details should be verified on the current STO Express corporate pages before use in compliance or legal documents.

Carrier Entity Relationships

Entity

Entity type

STO Express

Canonical carrier

View all details for STO Express

Relationship to STO Express	STO Express is the parcel carrier that receives, sorts, transports and delivers shipments under the STO Express network where the shipment is physically tendered to STO Express.
Why it matters to tracking	A tracking event should not be treated as physical possession until STO Express has produced an acceptance, pickup, collection or facility scan.
Official evidence	STO Express official website and service portal.

Domestic express and business parcel services

Operated services

View all details for STO Express operated services

Relationship to STO Express	Domestic parcel services are operated by STO Express through pickup outlets, sorting facilities, line-haul transportation and delivery couriers.
Why it matters to tracking	Domestic scans normally show pickup, dispatch, arrival, delivery route and signed-delivery events.
Official evidence	STO Express service and waybill query pages.

STO Express waybill number

Tracking product

View all details for STO Express waybill numbers

Relationship to STO Express	A STO Express waybill number identifies a shipment record in the STO Express tracking system when it is issued or accepted for a STO Express service.
Why it matters to tracking	Marketplace order numbers and merchant reference numbers are not the same as STO Express waybill numbers.
Official evidence	STO Express waybill inquiry functions.

Sorting centers, outlets and couriers

Network entities

View all details for STO Express network entities

Relationship to STO Express	STO Express tracking events may be generated by local outlets, regional sorting centers, trunk transport nodes and final delivery couriers.
Why it matters to tracking	The last physical scan location indicates the most recent known network stage, not necessarily the delivery address.
Official evidence	STO Express outlet and tracking tools.

Cross-border postal or commercial partners

International or last-mile partners

View all details for STO Express partner handoffs

Relationship to STO Express	A partner may tender shipments to STO Express in China, or STO Express may transfer a cross-border shipment to another carrier after export processing.
Why it matters to tracking	A partner pre-alert does not prove STO Express has the parcel, and a destination carrier scan may become the authoritative last-mile record after handoff.
Official evidence	Official tracking events and seller service documentation should be checked for each shipment.

17TRACK

Independent tracking platform

View all details for 17TRACK and STO Express

Relationship to STO Express	17TRACK aggregates available STO Express tracking events and related partner events where supported.
Why it matters to tracking	17TRACK helps users compare multi-carrier events but does not transport parcels, change addresses, issue refunds or approve claims.
Official evidence	17TRACK tracking platform and 17TRACK API documentation.

Quick Answer

To track STO Express, enter the STO Express waybill number on the official STO Express website or use 17TRACK to view available events from STO Express and possible partner carriers. If no result appears, first check whether you entered a waybill number rather than a marketplace order number, whether the seller has only created a label, and whether STO Express has physically received the parcel.

Pro Tip: 17TRACK is an independent tracking platform. 17TRACK can show tracking data where available, but 17TRACK cannot pick up a parcel, modify an address, accelerate customs, authorize a refund or approve a claim for STO Express.

How to Track STO Express Packages

STO Express tracking works best when you use the carrier waybill number shown on the shipping label, receipt, seller shipment page or fulfillment export file.

Open the official STO Express website at http://www.sto.cn/ and use the waybill query function.
Paste the STO Express waybill number without extra words, spaces or punctuation that are not part of the number.
Use 17TRACK when the shipment may involve multiple carriers, a marketplace seller, a cross-border partner or a destination last-mile carrier.
If the number is rejected, ask the sender for the carrier waybill number, not the order number, payment number or internal reference.

Identifier Differences

Identifier	Use for tracking?
STO Express waybill number	Yes, when issued for a STO Express shipment and accepted by the tracking system.
Marketplace order number	No, unless the marketplace also displays the linked STO Express waybill number.
Merchant reference number	Usually no; it identifies a merchant order record rather than a carrier scan record.
Partner or last-mile number	Sometimes; use 17TRACK or ask the seller which carrier controls the current transport stage.

Tracking Number Formats and Examples

STO Express waybill numbers are normally carrier-issued numeric identifiers for STO Express shipments. Cross-border sellers may also show partner identifiers, postal S10 numbers or marketplace reference numbers; being searchable with STO Express or 17TRACK does not prove that STO Express issued the number.

Tracking Number Format

Identifier family

Normalized pattern

STO Express domestic waybill

Typically numeric; remove spaces and hyphens before searching.

View all details for STO Express domestic waybill

Length/structure	Commonly seen as a multi-digit numeric waybill. Public pages do not provide a complete universal rule for all current and historical ranges.
Issued by	STO Express or an authorized shipper using STO Express waybill resources.
Typical service/use	Domestic parcels, ecommerce parcels and business express shipments inside mainland China.
Who sees it and where	Sender receipt, shipping label, seller shipment page, buyer shipping notification and enterprise shipping export.
Tracking scope	STO Express pickup, sorting, line-haul, delivery route, delivery failure, pickup and signed-delivery events where scanned.
Important caveat	Do not infer service type from the first digits alone unless the shipper service contract or official label confirms it.

STO Express electronic pre-alert

May appear as a valid waybill before the first physical scan.

View all details for STO Express electronic pre-alert

Length/structure	Uses the shipment waybill number assigned in the shipper or platform system.
Issued by	STO Express system, shipper account or shipping platform connected to STO Express.
Typical service/use	Online label creation and order fulfillment before pickup.
Who sees it and where	Marketplace buyers may see it immediately after the seller marks an order shipped.
Tracking scope	Shows booking or label-level visibility only until STO Express scans the parcel.
Important caveat	A created waybill does not mean STO Express has physically received the parcel.

Partner-issued cross-border number

Numeric or alphanumeric, depending on the logistics partner.

View all details for partner-issued cross-border numbers

Length/structure	Varies by partner; may not match STO Express domestic waybill patterns.
Issued by	Seller platform, consolidator, freight forwarder, postal operator or commercial last-mile carrier.
Typical service/use	China export parcels, overseas warehouse returns or imported shipments using STO Express for one leg.
Who sees it and where	Marketplace buyers often see this number in order tracking before or after a STO Express leg.
Tracking scope	May cover only partner pickup, export, line-haul or last-mile delivery depending on who controls the shipment.
Important caveat	If STO Express has no scan, contact the seller or issuing logistics partner first.

UPU S10 postal number

Two letters + nine digits + two-letter country code, such as LX ######### CN.

View all details for postal S10 numbers

Length/structure	13 characters under the UPU S10 style: service indicator, serial digits including check digit, and origin country code.
Issued by	Postal operator or postal-qualified logistics channel, not necessarily STO Express.
Typical service/use	International postal parcels, registered mail, e-commerce packets and postal handoffs.
Who sees it and where	Cross-border buyers may see it in marketplace shipping details or destination postal tracking.
Tracking scope	Origin acceptance, export, airline or line-haul, destination postal import and delivery where supported.
Important caveat	A postal number may coexist with a STO Express domestic number; use 17TRACK to discover linked carrier events.

Merchant order or reference ID

Platform-specific letters or numbers; not a carrier tracking number.

View all details for merchant reference IDs

Length/structure	Determined by the ecommerce platform or merchant internal system.
Issued by	Merchant, marketplace or enterprise resource planning system.
Typical service/use	Customer service, order lookup, return authorization or payment matching.
Who sees it and where	Buyer order page, invoice, email confirmation or after-sales case.
Tracking scope	No direct carrier scan scope unless the platform maps it to a STO Express waybill.
Important caveat	Ask the seller for the STO Express waybill if only an order ID is provided.

Tracking Statuses and Meanings

STO Express status wording may be displayed in Chinese or translated by a tracking platform. The safest interpretation is to map each event to the parcel lifecycle and the responsible party that currently has the shipment or the data record.

Status Quick Lookup

Status

Lifecycle stage

Waybill created / electronic information received

Pre-shipment

View all details for waybill created

What it means	The sender or platform created a STO Express shipment record.
Current responsible party	Sender, seller or pickup location until STO Express physically collects the parcel.
What happens next	A collection or acceptance scan should appear after handover.
What you should do	Wait for pickup; ask the seller if there is no acceptance scan after the promised dispatch date.

Collected / accepted

Accepted

View all details for collected or accepted

What it means	STO Express or an authorized outlet has received the parcel.
Current responsible party	STO Express origin outlet or pickup courier.
What happens next	The parcel moves to an origin sorting center.
What you should do	No action unless the item is time-sensitive and stops before sorting.

Departed facility / in transit

In transit

View all details for in transit

What it means	The parcel left a STO Express facility or line-haul node.
Current responsible party	STO Express transport network or contracted line-haul provider under STO Express control.
What happens next	Arrival at a regional or destination sorting center.
What you should do	Monitor the next scan; line-haul gaps are common between facilities.

Arrived at sorting center

In transit

View all details for sorting center arrival

What it means	The parcel was scanned at a hub for routing or transfer.
Current responsible party	STO Express sorting facility.
What happens next	Sorting, dispatch and movement to the next network node.
What you should do	No action unless repeated arrivals indicate routing trouble.

Customs / export or import processing

Customs/Handover

View all details for customs processing

What it means	A cross-border parcel is being reviewed, declared, transferred or released by customs or a customs broker.
Current responsible party	Customs authority, broker, origin carrier or destination carrier depending on the exact event.
What happens next	Release, tax request, return, inspection or transfer to the next carrier.
What you should do	Check for tax, document or recipient ID requests; do not treat arrival at customs as clearance.

Out for delivery

View all details for out for delivery

What it means	The parcel is assigned to a courier route or local delivery station.
Current responsible party	STO Express delivery courier or local delivery outlet.
What happens next	Delivery, delivery failure, pickup notice or rescheduled delivery.
What you should do	Keep the phone available and confirm the address and access instructions.

Delivered / signed

Delivered

View all details for delivered or signed

What it means	STO Express recorded delivery, signature, pickup completion or authorized receipt.
Current responsible party	Recipient, pickup point, property reception or authorized receiver after delivery confirmation.
What happens next	The shipment is normally closed unless a delivery dispute is opened.
What you should do	If not received, check family, front desk, parcel locker, neighbor, delivery photo or local outlet immediately.

Delivery failed / address issue

Exception

View all details for delivery failed or address issue

What it means	The courier could not complete delivery because of address, phone, access, payment, absence or local restrictions.
Current responsible party	STO Express local delivery outlet and the recipient or sender who can correct information.
What happens next	Redelivery, pickup hold, address correction or return may follow.
What you should do	Contact the local outlet or sender quickly with tracking number, correct address and phone number.

Returned / return to sender

Return

View all details for return to sender

What it means	The shipment is moving back to the sender because delivery, clearance, address verification or acceptance failed.
Current responsible party	STO Express or partner carrier during return transit; sender after return delivery.
What happens next	Return transit scans and final return delivery to the sender.
What you should do	Recipient should contact the seller for refund or reshipment; sender should contact STO Express for investigation if return is disputed.

Services and Delivery Times

STO Express delivery time depends on origin, destination, service contract, pickup cutoff, sorting route, weather, holidays, address quality and partner handoff. Treat any estimated date as a planning estimate unless STO Express or the shipper contract expressly states a guarantee.

Service Comparison

Service

Service type

Domestic express parcel

Door-to-door parcel delivery in mainland China.

View all details for domestic express parcel

Best for	Consumer parcels, ecommerce orders and small business shipments.
Coverage	Mainland China network coverage depends on serviceable pickup and delivery locations.
Tracking level	Waybill-level pickup, sorting, transit, delivery and exception scans.
Key size/weight condition	Subject to current STO Express acceptance rules and outlet assessment.
Included protection/extra service	Standard transport liability and optional declared value or special service may depend on shipper contract.
Main limitation	Remote areas, prohibited items, poor address data and peak season can extend transit.

Ecommerce fulfillment parcel

Marketplace and merchant parcel shipping.

View all details for ecommerce fulfillment parcel

Best for	High-volume seller dispatch, returns and order tracking.
Coverage	Depends on seller warehouse, STO Express pickup routes and destination serviceability.
Tracking level	Electronic pre-alert plus physical scans after STO Express acceptance.
Key size/weight condition	Based on merchant shipping agreement and actual parcel acceptance.
Included protection/extra service	Contract-based services may include batch labels, reconciliation and exception handling.
Main limitation	Buyer may see tracking before the seller hands over the parcel.

Heavy or bulky item service

Large parcel or logistics shipment where available.

View all details for heavy or bulky item service

Best for	Items that exceed normal small parcel handling but are accepted by the carrier outlet.
Coverage	Availability varies by lane, outlet and operational capacity.
Tracking level	Shipment-level scans may be less frequent than standard parcels.
Key size/weight condition	Must meet current acceptance, packaging and handling rules.
Included protection/extra service	Declared value and special handling should be agreed before shipment.
Main limitation	Delivery appointment, stairs, restricted access and damage inspection may affect final delivery.

Cross-border partner shipment

International transport involving STO Express and partners.

View all details for cross-border partner shipment

Best for	China-origin ecommerce parcels, imports, exports or partner handoff shipments.
Coverage	Depends on the actual international service and destination carrier, not only STO Express.
Tracking level	STO Express leg plus partner, customs and destination carrier events where data is shared.
Key size/weight condition	Subject to export, airline, customs, postal or destination carrier restrictions.
Included protection/extra service	Depends on seller logistics product and declared value arrangements.
Main limitation	Customs and carrier handoffs can create scan gaps and responsibility changes.

Delivery Time

Service

Published delivery standard

Domestic express parcel

Varies by origin, destination, pickup time and route; confirm lane-specific timing on STO Express or with the shipper.

View all details for domestic express delivery time

Business or calendar days	Operational estimates usually use working and transport days; holidays can change movement.
Guarantee status	Not a general guarantee unless expressly included in a service contract or official promise.
Starts counting from	Physical acceptance scan or agreed pickup, not label creation.
Main delay factors	Pickup cutoff, sorting congestion, weather, holidays, address issues, security checks and remote delivery.
Official source date/validity	Use current STO Express service pages and outlet confirmation for live lane rules.

Ecommerce fulfillment parcel

Varies by seller dispatch speed plus STO Express transport time.

View all details for ecommerce fulfillment delivery time

Business or calendar days	Seller handling time and carrier operating days both matter.
Guarantee status	Marketplace estimated delivery is normally not the same as a STO Express money-back guarantee.
Starts counting from	STO Express acceptance after the merchant physically hands over the parcel.
Main delay factors	Seller batching, warehouse pickup, late handover, address quality and local delivery capacity.
Official source date/validity	Check the seller shipping promise and STO Express tracking events together.

Cross-border partner shipment

Varies by export line, customs, airline or ground line-haul and destination carrier.

View all details for cross-border delivery time

Business or calendar days	International estimates are typically calendar-day planning ranges, while customs and delivery operators work on local schedules.
Guarantee status	Not guaranteed unless the specific international product states a guarantee.
Starts counting from	Physical acceptance into the international logistics channel, not only seller shipment notification.
Main delay factors	Export clearance, flight capacity, import customs, tax payment, destination holidays and last-mile backlog.
Official source date/validity	Use the shipper’s selected cross-border product rules and destination carrier tracking.

Destination Country Delivery Times

Destination Country / Region

Estimated Delivery Time Range

United States

8–25 business days

View all details for United States delivery

Primary Service Type	Cross-border ecommerce parcel or partner line-haul
Average Delivery Days	Average around 14–18 days for normal lanes
Last-Mile Partner / Handoff Carrier	USPS or commercial last-mile carrier depending on product
Customs & Clearance Tips	Expect scan gaps between export and import; customs, de minimis rules and last-mile induction affect timing.

Canada

10–28 business days

View all details for Canada delivery

Primary Service Type	International ecommerce parcel
Average Delivery Days	Average around 16–22 days
Last-Mile Partner / Handoff Carrier	Canada Post or commercial partner
Customs & Clearance Tips	Duties, taxes and remote province routing can extend delivery after import arrival.

Mexico

12–35 business days

View all details for Mexico delivery

Primary Service Type	Cross-border postal or economy parcel
Average Delivery Days	Average around 20–26 days
Last-Mile Partner / Handoff Carrier	Correos de México or commercial last-mile partner
Customs & Clearance Tips	Import processing and local address validation are common delay points.

United Kingdom

7–22 business days

View all details for United Kingdom delivery

Primary Service Type	International ecommerce parcel
Average Delivery Days	Average around 12–16 days
Last-Mile Partner / Handoff Carrier	Royal Mail or commercial partner
Customs & Clearance Tips	VAT handling and accurate item value reduce import holds.

Germany

8–24 business days

View all details for Germany delivery

Primary Service Type	EU ecommerce parcel
Average Delivery Days	Average around 13–18 days
Last-Mile Partner / Handoff Carrier	Deutsche Post, DHL Paket or commercial partner
Customs & Clearance Tips	IOSS or VAT data quality is important for low-value ecommerce parcels.

France

8–25 business days

View all details for France delivery

Primary Service Type	EU ecommerce parcel
Average Delivery Days	Average around 14–19 days
Last-Mile Partner / Handoff Carrier	La Poste, Colissimo or commercial partner
Customs & Clearance Tips	Tax data and recipient contact details help avoid customs or delivery notices.

Spain

9–28 business days

View all details for Spain delivery

Primary Service Type	EU ecommerce parcel
Average Delivery Days	Average around 16–21 days
Last-Mile Partner / Handoff Carrier	Correos or commercial partner
Customs & Clearance Tips	Island destinations and customs-managed territories can take longer.

Italy

9–30 business days

View all details for Italy delivery

Primary Service Type	EU ecommerce parcel
Average Delivery Days	Average around 17–23 days
Last-Mile Partner / Handoff Carrier	Poste Italiane or commercial partner
Customs & Clearance Tips	Import release and regional distribution may create several days without scans.

Netherlands

7–22 business days

View all details for Netherlands delivery

Primary Service Type	EU ecommerce parcel
Average Delivery Days	Average around 12–17 days
Last-Mile Partner / Handoff Carrier	PostNL or commercial partner
Customs & Clearance Tips	EU VAT data and hub injection timing often determine final speed.

Poland

9–27 business days

View all details for Poland delivery

Primary Service Type	EU ecommerce parcel
Average Delivery Days	Average around 16–21 days
Last-Mile Partner / Handoff Carrier	Poczta Polska or commercial partner
Customs & Clearance Tips	Regional sortation and tax handling can affect delivery after EU entry.

Australia

8–26 business days

View all details for Australia delivery

Primary Service Type	International ecommerce parcel
Average Delivery Days	Average around 14–20 days
Last-Mile Partner / Handoff Carrier	Australia Post or commercial partner
Customs & Clearance Tips	Biosecurity restrictions and remote-area delivery can extend transit.

Japan

5–18 business days

View all details for Japan delivery

Primary Service Type	Regional Asia ecommerce parcel
Average Delivery Days	Average around 8–13 days
Last-Mile Partner / Handoff Carrier	Japan Post, Yamato or commercial partner depending on product
Customs & Clearance Tips	Accurate recipient name, phone and item description support smooth import delivery.

South Korea

5–18 business days

View all details for South Korea delivery

Primary Service Type	Regional Asia ecommerce parcel
Average Delivery Days	Average around 8–14 days
Last-Mile Partner / Handoff Carrier	Korea Post or commercial courier
Customs & Clearance Tips	Personal customs code or recipient verification may be required for ecommerce imports.

Singapore

5–16 business days

View all details for Singapore delivery

Primary Service Type	Regional ecommerce parcel
Average Delivery Days	Average around 7–12 days
Last-Mile Partner / Handoff Carrier	SingPost or commercial last-mile partner
Customs & Clearance Tips	High delivery density helps, but GST and declaration accuracy still matter.

Malaysia

6–20 business days

View all details for Malaysia delivery

Primary Service Type	Southeast Asia ecommerce parcel
Average Delivery Days	Average around 10–15 days
Last-Mile Partner / Handoff Carrier	Pos Malaysia or commercial courier
Customs & Clearance Tips	Tax, restricted goods and rural delivery can create variability.

Thailand

6–22 business days

View all details for Thailand delivery

Primary Service Type	Southeast Asia ecommerce parcel
Average Delivery Days	Average around 11–16 days
Last-Mile Partner / Handoff Carrier	Thailand Post or commercial courier
Customs & Clearance Tips	Recipient phone accuracy is important for customs or delivery contact.

Brazil

18–55 business days

View all details for Brazil delivery

Primary Service Type	Postal or economy cross-border parcel
Average Delivery Days	Average around 30–40 days
Last-Mile Partner / Handoff Carrier	Correios or commercial partner
Customs & Clearance Tips	CPF, tax assessment, payment notices and customs backlog are major timing factors.

United Arab Emirates

7–22 business days

View all details for United Arab Emirates delivery

Primary Service Type	Middle East ecommerce parcel
Average Delivery Days	Average around 12–17 days
Last-Mile Partner / Handoff Carrier	Emirates Post or commercial courier
Customs & Clearance Tips	Address landmarks, phone number and import documentation affect final delivery.

Saudi Arabia

9–28 business days

View all details for Saudi Arabia delivery

Primary Service Type	Middle East ecommerce parcel
Average Delivery Days	Average around 15–22 days
Last-Mile Partner / Handoff Carrier	Saudi Post or commercial courier
Customs & Clearance Tips	Recipient contact, national address and import controls can affect release.

South Africa

14–45 business days

View all details for South Africa delivery

Primary Service Type	Postal or economy parcel
Average Delivery Days	Average around 25–35 days
Last-Mile Partner / Handoff Carrier	South African Post Office or commercial partner
Customs & Clearance Tips	Import processing and regional distribution can cause extended scan gaps.

The destination ranges above are operational planning estimates for cross-border ecommerce lanes involving China-origin handoffs and are not STO Express guarantees. Actual delivery may change because of customs, service product, holidays, flight capacity, security screening and last-mile carrier performance.

Common Tracking Problems and Solutions

Most STO Express tracking problems fall into one of four groups: the number is not a carrier waybill, the parcel has not been physically handed over, the shipment is between scan points, or an exception requires sender or recipient action.

Problem & Solution

Problem/status shown

Likely cause

Invalid number

Order ID, typo, wrong carrier or number not activated.

View all details for invalid number

Check first	Remove spaces, verify digits and confirm it is a STO Express waybill.
Immediate action	Ask the sender for the carrier waybill number.
When to escalate	If the seller cannot provide a valid carrier number after the promised dispatch time.
Who to contact	Seller or sender first; STO Express only after a valid STO Express number exists.

No tracking after label creation

Seller created the waybill but has not handed over the parcel.

View all details for no tracking after label creation

Check first	Seller dispatch date and whether a pickup/accepted scan exists.
Immediate action	Wait for the first physical scan or ask the seller to confirm handover.
When to escalate	When the seller’s stated dispatch window has passed without acceptance.
Who to contact	Seller or warehouse, because STO Express may not yet have the parcel.

Long time without update

Line-haul movement, hub backlog, missed scan or cross-border visibility gap.

View all details for long time without update

Check first	Last scan location, date, service type and whether the next stage is customs or partner handoff.
Immediate action	Continue monitoring; use 17TRACK to check partner events.
When to escalate	Escalate when the parcel is beyond the seller’s promised window or the last scan indicates an exception.
Who to contact	Sender for shipment investigation; local carrier if the destination carrier has accepted the parcel.

Delivery exception

Address, phone, access, payment, weather, restriction or failed delivery attempt.

View all details for delivery exception

Check first	Recipient phone, address, building access, pickup notice and latest local station event.
Immediate action	Contact the courier outlet or seller with corrected information.
When to escalate	Immediately if the status says return, refusal, damaged or held.
Who to contact	Recipient may contact local delivery; sender may authorize address correction or return handling.

Customs hold

Import review, missing data, tax assessment or restricted item screening.

View all details for customs hold

Check first	Tax notice, recipient ID request, broker message, destination postal page and item restrictions.
Immediate action	Provide requested information only through official carrier, customs or seller channels.
When to escalate	If customs requests documents or the parcel is returned, seized or refused.
Who to contact	Seller, broker, destination carrier or customs office depending on the notice.

Delivered but not received

Delivered to front desk, family, locker, neighbor, wrong unit, or premature delivery scan.

View all details for delivered but not received

Check first	Delivery location, proof of delivery, parcel locker, reception, neighbors and family members.
Immediate action	Contact the delivery outlet quickly while route memory and scan data are fresh.
When to escalate	If the outlet confirms misdelivery or cannot locate the parcel.
Who to contact	Recipient contacts local delivery; sender or seller starts formal investigation or refund process.

Lost or damaged

No final scan, damage found in transit, missing contents or delivery dispute.

View all details for lost or damaged shipments

Check first	Latest scan, delivery proof, packaging photos, invoice, item value and service contract.
Immediate action	Keep packaging and contents; document damage before disposal.
When to escalate	When STO Express or the seller confirms loss, damage or unresolved non-delivery.
Who to contact	Sender or merchant usually files carrier claim; buyer asks seller for refund or reshipment.

International Shipping, Customs and Carrier Handoffs

For cross-border shipments, STO Express may control only part of the journey. A partner handoff has three separate moments: electronic pre-advice, physical transfer and the first receiving scan by the next carrier.

International Flow

Stage

Physical custodian/responsible entity

Seller dispatch and label creation

Seller, warehouse or platform before handover.

View all details for seller dispatch

Typical tracking event	Waybill created or shipping information received.
What is happening	Data exists, but the parcel may still be at the warehouse.
Can the tracking number change?	Yes, a partner or destination number may be added later.
Normal visibility gap	Until physical pickup or first acceptance scan.
What the customer should do	Ask the seller if no physical scan appears after the promised ship date.

STO Express origin pickup and sorting

STO Express origin outlet and sorting network.

View all details for STO Express origin processing

Typical tracking event	Collected, accepted, arrived at facility or departed facility.
What is happening	The parcel is consolidated and routed toward export or domestic delivery.
Can the tracking number change?	The STO Express waybill may be linked to a cross-border number.
Normal visibility gap	Between origin hub departure and export facility arrival.
What the customer should do	Monitor scans and confirm the destination address with the seller.

Export processing and customs/security

Exporter, broker, customs authority, airport or line-haul operator.

View all details for export processing

Typical tracking event	Export customs, handed to airline, departed country or security check.
What is happening	The parcel is declared, screened and prepared for international transport.
Can the tracking number change?	Yes, a postal S10 or partner airway-bill-related identifier may appear.
Normal visibility gap	Several days can pass while awaiting line-haul capacity or customs release.
What the customer should do	Check item restrictions and wait for destination import scan before assuming loss.

International line-haul

Airline, ground carrier, postal exchange partner or logistics consolidator.

View all details for international line-haul

Typical tracking event	Departed export hub, in transit to destination or no event until arrival.
What is happening	The parcel is moving between countries or waiting for transport capacity.
Can the tracking number change?	The original number may continue, or a destination last-mile number may be mapped.
Normal visibility gap	This is often the largest scan gap in cross-border ecommerce.
What the customer should do	Use 17TRACK to watch for destination carrier detection.

Import customs and destination handoff

Destination customs, broker and destination carrier.

View all details for import customs and handoff

Typical tracking event	Arrived at destination, customs clearance, released, awaiting delivery carrier.
What is happening	The shipment is reviewed for taxes, admissibility and delivery handoff.
Can the tracking number change?	Yes, destination carriers may assign or display a local last-mile number.
Normal visibility gap	Gap between import arrival and first destination carrier scan.
What the customer should do	Respond to tax or document requests from official channels only.

Last-mile delivery

Destination postal operator or commercial courier.

View all details for last-mile delivery

Typical tracking event	Out for delivery, delivery attempt, pickup notice, delivered or returned.
What is happening	The destination carrier is completing final delivery under local rules.
Can the tracking number change?	Yes, use the destination carrier number when provided.
Normal visibility gap	Local weekends, customs release batching and depot processing may delay route scans.
What the customer should do	Contact the destination carrier for address, pickup or redelivery once it has accepted the parcel.

Delivery Management and Post-shipment Options

Delivery changes for STO Express are usually controlled by the sender, the shipper account, the local delivery outlet or the recipient after a courier attempts contact. Availability depends on shipment stage and local outlet rules.

Delivery Management

Option

Who can request

Address correction

Sender, shipper account or recipient where local outlet allows verification.

View all details for address correction

Eligibility	Before final delivery or return; major route changes may require sender approval.
Deadline/available stage	Most useful before out-for-delivery or immediately after a failed attempt.
Fee	Not publicly confirmed; may depend on service contract or rerouting.
Guaranteed?	No; operational feasibility and verification are required.
Official action link	STO Express official portal

Redelivery or courier contact

Recipient or local delivery outlet.

View all details for redelivery or courier contact

Eligibility	After a failed attempt or when the courier has not completed delivery.
Deadline/available stage	Before return or local hold expiry.
Fee	Not publicly confirmed; contact local outlet.
Guaranteed?	No; depends on route capacity and address correctness.
Official action link	STO Express official portal

Pickup at outlet or parcel station

Recipient with tracking number and required identification where applicable.

View all details for pickup at outlet

Eligibility	When the shipment is held at a local outlet, pickup point or delivery station.
Deadline/available stage	Before local hold expiration or return processing.
Fee	Not publicly confirmed.
Guaranteed?	Pickup depends on local station confirmation and identity verification.
Official action link	STO Express official portal

Return or intercept

Usually sender or shipper account.

View all details for return or intercept

Eligibility	Before final delivery and only if operationally possible.
Deadline/available stage	Earlier is better; not normally possible after confirmed delivery.
Fee	Contract-dependent and not publicly confirmed.
Guaranteed?	No; in-transit intercepts are not guaranteed.
Official action link	STO Express official portal

Lost, Damaged, Claims, Insurance and Refunds

A tracking inquiry, carrier investigation, claim, declared-value compensation and seller refund are separate processes. For STO Express, the sender or shipper account is usually best positioned to open a carrier case because the sender controls shipment contract, declared value and proof of contents.

Claims and Refunds

Process

Use when

Tracking inquiry

The parcel has not updated, is delayed or shows a confusing scan.

View all details for tracking inquiry

Who files	Sender, recipient or merchant support with a valid waybill.
Earliest/latest filing time	Use current STO Express support rules; no universal public deadline should be assumed.
Required evidence	Tracking number, shipment date, addresses, phone, latest scan and issue description.
Possible outcome	Scan explanation, local outlet follow-up, delivery update or request for more information.
Official link	STO Express official portal

Loss or damage claim

The carrier confirms loss, damage, missing contents or unresolved non-delivery.

View all details for loss or damage claim

Who files	Usually the sender or shipper account; recipient may need to provide photos and statements.
Earliest/latest filing time	Follow the current STO Express waybill terms and contract; do not rely on third-party deadlines.
Required evidence	Waybill, invoice, declared value, packaging, item photos, damage photos, delivery proof and communication record.
Possible outcome	Investigation, compensation under applicable rules, denial or request for additional evidence.
Official link	STO Express official portal

Seller refund or reshipment

A buyer did not receive the order or received damaged goods purchased from a merchant.

View all details for seller refund or reshipment

Who files	Buyer opens an after-sales case with the seller or marketplace.
Earliest/latest filing time	Follow marketplace buyer-protection deadlines.
Required evidence	Order number, tracking result, delivery dispute details, photos and messages.
Possible outcome	Refund, replacement, seller investigation or request to wait for carrier outcome.
Official link	Use the seller or marketplace after-sales portal for the purchase.

17TRACK cannot approve STO Express claims, refund purchases or change the carrier’s liability decision.

Shipping Restrictions and Special Handling

STO Express acceptance is subject to Chinese express-delivery rules, carrier operating rules and destination import restrictions for cross-border shipments. Restricted or incorrectly declared goods can cause refusal, security inspection, customs hold, return or disposal.

Shipping Restrictions

Customer Service

For STO Express issues, contact order seller first if the parcel has not been physically accepted, contact STO Express or the local delivery outlet for domestic delivery exceptions, and contact the destination carrier after an international last-mile handoff.

Customer Service

Channel

Verified contact/link

Official website and tracking portal

http://www.sto.cn/

View all details for STO Express official website

Best for	Waybill tracking, service information, outlet lookup and official contact entry points.
Region/language	Mainland China; Chinese-language support is expected.
Hours and time zone	Use the current website or local outlet for live service hours.
Information to prepare	Waybill number, sender and recipient phone, shipment date, address and latest scan.
Important limitation	Website availability and functions may vary by region and device.

Official customer hotline

95543, where currently available in mainland China

View all details for STO Express hotline

Best for	Domestic tracking inquiry, delivery exception, local outlet follow-up and complaint routing.
Region/language	Mainland China; Chinese-language support.
Hours and time zone	Verify current hours on STO Express official channels before relying on a time window.
Information to prepare	Tracking number, name, phone, full address, problem description and photos if damaged.
Important limitation	International partner and marketplace refund issues may need the seller or destination carrier.

Sender or merchant support

Use the seller, marketplace or shipper account channel for the order.

View all details for merchant support

Best for	Label created but no pickup, refunds, reshipment, claims, wrong address before dispatch and proof of value.
Region/language	Depends on seller platform.
Hours and time zone	Depends on seller or marketplace service hours.
Information to prepare	Order number, STO Express waybill, payment proof, messages and delivery issue evidence.
Important limitation	The seller cannot create carrier scans for a parcel not accepted by STO Express.

Destination carrier support

Use the postal or commercial carrier shown after international handoff.

View all details for destination carrier support

Best for	Import delivery, pickup notice, local tax request, redelivery and delivered-but-not-received after destination acceptance.
Region/language	Destination country language and local service rules.
Hours and time zone	Local carrier hours apply.
Information to prepare	Original number, local tracking number, recipient ID if needed, address and notice details.
Important limitation	Destination carrier cannot resolve seller refund or origin export problems.

Ecommerce and Business Tracking

Businesses should separate consumer tracking, carrier operational systems and multi-carrier visibility. STO Express official tools are best for STO Express-only waybill inquiry, while 17TRACK is useful when shipments include multiple carriers, marketplace logistics and exception monitoring.

Developer/API Comparison

Option

Provider

Official STO Express tracking or enterprise integration

STO Express

View all details for official STO Express integration

Carrier coverage	STO Express shipments and services available to the shipper account.
Primary use	Waybill inquiry, enterprise shipping operations and customer service workflows.
Authentication	Current public authentication method was not confirmed from a publicly accessible official developer page.
Tracking/batch/webhook capability	Depends on shipper account and STO Express enterprise arrangements; public webhook capability not confirmed.
Current developer documentation	Use STO Express official business or technology contacts for current documentation.
Migration/deprecation note	Do not copy old unofficial endpoint examples; verify current endpoint, signature and contract status with STO Express.

17TRACK Tracking API

17TRACK

View all details for 17TRACK API

Carrier coverage	Multi-carrier tracking, including STO Express where supported by 17TRACK carrier detection and data availability.
Primary use	Batch registration, normalized tracking visibility, multi-carrier exception monitoring and customer notifications.
Authentication	17token header with an API key.
Tracking/batch/webhook capability	Registration endpoint and broader API features are documented by 17TRACK.
Current developer documentation	17TRACK API documentation
Migration/deprecation note	Use the current v2.4 documentation and do not assume older API examples are valid.

FAQ

1. How do I track my STO Express package?

Enter the STO Express waybill number on the official STO Express website or track it with 17TRACK to view available shipment events and possible partner-carrier scans.

2. Where can I find my STO Express tracking number?

The STO Express tracking number is usually on the shipping label, sender receipt, marketplace shipment page, seller email or enterprise shipment export file.

3. What does a STO Express tracking number look like?

A STO Express domestic waybill is commonly a numeric identifier, but STO Express does not publish a single universal public pattern for every current and historical number range.

4. Why does STO Express tracking say the waybill was created but nothing else happened?

The sender may have created the shipping record before handing the parcel to STO Express, so wait for a collection or acceptance scan before treating the parcel as physically received.

5. Why is my STO Express tracking not updating?

STO Express tracking may stop updating while the parcel is between sorting facilities, awaiting a partner handoff, undergoing customs processing or missing an intermediate scan.

6. How long does STO Express delivery take?

STO Express delivery time depends on origin, destination, service, pickup cutoff, weather, holidays and address quality; cross-border shipments also depend on customs and last-mile partners.

7. What should I do if STO Express delivery failed?

Check the address, phone number, access information and pickup notice, then contact the local STO Express outlet or the sender before the parcel is returned.

8. What should I do if STO Express says delivered but I did not receive the parcel?

Check the delivery location, family members, reception desk, parcel locker and neighbors first, then contact the local delivery outlet and the seller with the tracking number.

9. How do I report a lost or damaged STO Express shipment?

Keep the packaging, take photos, save the invoice and ask the sender or merchant to open the carrier investigation or claim because the sender usually controls the shipping contract.

10. How do I contact STO Express customer service?

Use the official STO Express website, the 95543 hotline where available in mainland China, the local outlet or the seller support channel, and prepare the waybill number and latest scan.

11. Can STO Express tracking show partner-carrier events?

STO Express tracking may show events for the STO Express leg, while 17TRACK can help identify and display partner-carrier events when a shipment moves through a cross-border or last-mile handoff.

12. Does a valid STO Express number prove STO Express has the parcel?

No, a valid STO Express waybill can exist before physical handover, and a collection or acceptance scan is the stronger signal that STO Express has received the parcel.

13. Can STO Express delivery time be guaranteed?

Do not treat a displayed estimated delivery date as a guarantee unless the specific STO Express service contract or official promise states a guarantee for that shipment.

14. Why does a cross-border STO Express shipment get a second tracking number?

A second number may be created by a postal operator, consolidator or destination last-mile carrier when the shipment leaves the STO Express-controlled leg.

15. Who should handle customs issues for a STO Express international parcel?

Customs issues are handled by the customs authority, broker, seller or destination carrier depending on the notice, so respond only through official channels and provide requested import information promptly.

16. Can businesses track STO Express shipments through an API?

Businesses may use STO Express enterprise arrangements where available, but a current public official STO Express tracking API endpoint was not confirmed; businesses can also use the 17TRACK API for multi-carrier tracking.

17. Can 17TRACK change the destination address for STO Express?

No, 17TRACK cannot change a STO Express address; the sender, shipper account, recipient or local STO Express outlet must handle address correction where allowed.

Tracking API

// 1. STO Express official tracking API
// Current public official tracking API not confirmed.
// Do not implement old or unofficial STO Express endpoint examples without verifying
// the current endpoint, HTTP method, authentication, signature and shipper contract
// directly with STO Express.

// 2. 17TRACK API
// Endpoint: POST https://api.17track.net/track/v2.4/register
// Headers:
//   17token: YourKey
//   Content-Type: application/json
// Body example:
// CARRIER_CODE is left as a placeholder if your integration has not confirmed
// the current 17TRACK carrier code for STO Express.

curl -X POST "https://api.17track.net/track/v2.4/register" \
  -H "17token: YourKey" \
  -H "Content-Type: application/json" \
  -d '[
    {
      "number": "TRACKING_NUMBER",
      "carrier": "CARRIER_CODE"
    }
  ]'