How to Find a Manufacturer in China: A Verification-First Sourcing Guide for Importers

1. Before you look for a manufacturer: prepare the data package

Most sourcing failures are specification failures, and a supplier can only be judged against something.

• a controlled 2D drawing stating material and grade, the general tolerance standard and class, individual tolerances where fit matters, and the finish, coating and packing requirements;
• a 3D model where geometry is complex;
• one or two sentences on what the part does, the first-order quantity, expected annual usage as a range you can support, and the destination market.

The destination market sets the compliance requirement. Fastener standards for door, window and cabinet hardware sit with ASTM Committee F16 on Fasteners — more than 59 standards in Volume 01.09 — so ask which standard a part claims to meet, then obtain that standard and check the claim. UL listings are checked in UL Product iQ. In Europe, CE marking may only be affixed after testing and the conformity assessment procedure required by the applicable EU harmonisation legislation, and notified bodies are listed in NANDO, which warns that “voluntary certificates” are not a recognised means of proving compliance. Where a product contains an electrical or electronic component, EU RoHS applies unless it is specifically excluded; the directive restricts ten substances. An ISO 9001 certificate describes a management system, not your part — ISO states that it does not perform certification or issue certificates.

This does not replace your compliance adviser or a test report from a laboratory meeting ISO/IEC 17025.

2. Channel types — and the signals each gives you

None of the channels importers normally use tells you who manufactures. They produce leads, and the verification work afterwards is identical.

B2B marketplaces. Comparability is the strength — one drawing sent to many accounts. The weakness is that the account you reach is optimised for response rate, not production capability: badges and transaction histories are commercial signals, not conformity evidence. Ask instead whether the entity on the certificate matches the entity you would contract with, and whether the person can describe a production route in their own words.

Trade fairs. You can handle samples and meet decision-makers, but a booth may represent a factory, an export house or an agent. Record the registered entity name, not the trading name on the stand.

Directories and association lists. Compiled from public or commercial data; membership is not a qualification. Treat each entry as a hypothesis.

Referrals and agents. The strongest lead, still not evidence. Ask in writing which entity will manufacture and which will invoice.

3. How to tell a trading company from a real factory

A trading company is not automatically a bad partner, but you must know which model you are dealing with: a trader adds a layer between you and the production floor, and quality problems surface later and close out harder. Use these tests together — one alone can be explained away.

• Registered scope and code. Enterprises hold a unified social credit code and a registered business scope, both public in the national credit system (Section 4). Production entries support a factory; wholesale and import-export entries point to a reseller. The code is the 18-digit identifier defined by GB 32100-2015.
• Certificate holder. Certificates name a legal entity, a site and a scope; one issued to a different company, site or scope is not covering your order. Validate it in the issuing database rather than from the PDF.
• The floor, live. Ask for a scheduled video call showing production, machines and in-process parts at a time you choose — a recorded film proves nothing. Then ask which operations are in house, which are subcontracted, and how critical features are measured and calibrated.
• Tooling and traceability. Who owns the tooling, where it is held, and what happens to it if the relationship ends — plus the material certificate for the heat or lot actually used, not a generic mill certificate.
• Contracting entity. If the entity on the contract is not the manufacturer, write the escalation route and audit rights into the contract accordingly.

These tests establish who you are dealing with, not capability for your part.

4. Verification: the official tools you can query yourself

Five official records answer most questions, and all five can be queried without the supplier's cooperation.

1. Company registration — GSXT. Search the exact name in the national enterprise credit information publicity system for the unified social credit code, registered scope, registered address, legal representative and annual reporting information, plus the abnormal operations and serious illegal and dishonest lists. The publicity regime comes from the Corporate Information Publicity Regulation (State Council Order No. 654, in force since 1 October 2014); the serious-illegal list is governed by the SAMR order currently in force.

2. Certificates issued in China — CNCA platform. Operated under SAMR, the national certification and accreditation public service platform is the domestic register of certificates and certified enterprises.

3. Accredited certificates — IAF CertSearch. The official global database for accredited certificates: it cross-checks that the certificate is valid, that the certification body was accredited to issue it, and that the accreditation body is a recognised signatory for that standard.

4. UL listings — UL Product iQ. A free account verifies UL certification of products and components.

5. EU notified bodies — NANDO. Searchable by country and by legislation, with each body's identification number and notified tasks.

Systems are not results: a dimensional or first-article report from a laboratory meeting ISO/IEC 17025 tells you more about your part than a system certificate does, and the bodies that certify systems must meet ISO/IEC 17021-1.

5. Import compliance checks to settle before you commit

Duty and trade-remedy positions change, and this site publishes no duty rates and no tariff classifications. These official entry points let your customs broker confirm the position for your product and origin.

• United States. USTR maintains the Section 301 tariff actions and exclusion process page, including the four-year review; China-related Section 301 activity is not one measure but several parallel proceedings, which USTR lists. CBP describes its enforcement of trade remedy measures for duties and quotas, and sets out the refund route for duties collected under the International Emergency Economic Powers Act.
• European Union. The Commission's trade defence framework covers anti-dumping, anti-subsidy and safeguard instruments, with an official database of investigations; CE marking follows testing and the prescribed conformity assessment, notified bodies are listed in NANDO, and RoHS applies where electrical or electronic parts are present.

Confirm classification, origin and any applicable measure in writing before tooling is committed.

6. RFQ and communication checklist

Send the same package to every candidate, so that the answers compare.

Ask. Which operations are in house and which are subcontracted? Which machines are used, and how many setups does the part need? How are critical features measured, and how are those instruments calibrated? Which material grade and stock form is used, from where, and what traceability accompanies delivery? Which legal entity manufactures, which quotes, and which invoices?

Request. The business licence, so the registered name and code can be checked; certificates with their numbers, issuers and scopes; and inspection and test reports naming the laboratory and the report number.

Settle in writing. The drawing revision and acceptance criteria; the inspection and sampling method; treatment of non-conforming units; tooling ownership; change control; confidentiality; and who provides compliance documentation for your market.

Suppliers who read the drawing and push back on manufacturability or tolerance feasibility are usually the ones who can make the part.

7. Your first order and trial order

Treat the first order as a test of the process, not as a purchase.

• Order a quantity small enough to limit exposure and large enough to reveal process stability.
• Require a first article before the batch runs, approve it in writing, and keep a sealed golden sample.
• Test the paperwork as carefully as the parts: material certificates traceable to the material used, and inspection reports covering the features you toleranced.
• Agree acceptance criteria and the sampling method in advance, and state them on the purchase order.
• Escalate to production volume only after the trial has passed.

8. Common pitfalls

1. Treating a list, a directory or a badge as evidence.
2. Validating the certificate but not the holder, the site or the scope.
3. Confusing a trading name with the registered entity.
4. Reading a management-system certificate as a product warranty.
5. Accepting a “voluntary certificate” as proof of EU compliance.
6. Committing tooling without written ownership and transfer terms.
7. Leaving compliance until after production, instead of using the official sources in Section 5.
8. Letting an intermediary be your only source of information about the manufacturer.

Request a quote

Send us the requirement, not a specification written from scratch. We work from the same data package described in Section 1, and we will tell you what is missing and which verification steps in Sections 3 to 6 to complete before a supplier starts quoting.

Attach the drawing, state the material and finishing requirement, and describe how the part is used and where it will be sold. Sourcing questions are welcome; the answer costs nothing and usually saves a revision.

Related pages

• Sourcing guides — the hub for this series on supplier qualification and first orders.
• Certification and compliance hub — how compliance obligations sit with the importer.
• ASTM vs CE vs UL: standards you need before importing — mapping standards to destination markets.
• Request a quote — upload a drawing and get sourcing feedback.

Last updated: 16 September 2026.

Sources

All sources retrieved 16 September 2026. The four entries marked source pending / not yet verified were obtained only through search indexes and were not verified verbatim; the body text therefore states no article numbers, order numbers, dates or counts drawn from them.