Chinese Supplier Certificates: How to Check
By ChineseCheck Team
When a Chinese supplier sends you a certificate, check four things in this order: whose name is on it, what it covers, whether it is current, and whether the issuer confirms it. Most misleading certificates we see in buyer enquiries are not forged. They are genuine documents that belong to another company, cover a different product, have expired, or come from a body whose approval means very little.
This guide covers the certificates buyers most often receive: management system certificates such as ISO 9001, product and textile certificates such as OEKO-TEX, laboratory test reports, and "trustworthy enterprise" style awards. For checking the business licence itself, see our separate guide to verifying a Chinese business license.
The Four Questions for Any Certificate
| Question | What to look at | Common problem |
|---|---|---|
| 1. Whose certificate is it? | Holder name, address, credit code if shown | Belongs to a parent, sister company, or the supplier's own supplier |
| 2. What does it cover? | Scope, product category, site, standard | Covers fabric not garments, one site not another, a different product line |
| 3. Is it current? | Issue date, expiry date, status | Expired, suspended, or withdrawn |
| 4. Does the issuer confirm it? | Issuer's own database or direct contact | Number not found, or issuer is a private body with no real standard behind it |
Compare the holder name with the Chinese legal name on the supplier's business licence and contract. If they differ, the certificate tells you about another company. Our guide on making sure the licence, contract, and bank account name the same company explains why this matters.
ISO and Other Management System Certificates
ISO itself does not certify companies or issue certificates. Certificates for standards such as ISO 9001 are issued by certification bodies, which may themselves be accredited by a national accreditation body.
To check one:
- Read the certificate: holder name, address, scope, standard, certificate number, certification body, and accreditation mark.
- Search the certificate in IAF CertSearch (iafcertsearch.org), the International Accreditation Forum's database of accredited certifications. You can search by company name or certificate number. It only contains accredited certifications, so a certificate that is not accredited will not appear.
- If it does not appear, contact the certification body named on the certificate, using contact details you find yourself rather than those printed on the document. The IAF's own guidance is to go to the certification body first.
Watch for: a scope that covers "trading" or "sales" rather than manufacturing; a site address that is not the factory you are buying from; and certification bodies you cannot find any independent trace of.
OEKO-TEX and Similar Product Labels
OEKO-TEX offers a public Label Check at oeko-tex.com/en/label-check. Enter the certificate or label number exactly as printed: OEKO-TEX states that its label numbers are case sensitive. If no result appears, OEKO-TEX asks you to contact it, and it also lists withdrawn certificates and labels separately.
When a result does appear, check two things:
- The holder. Is it the company you are buying from, or a fabric or yarn supplier further up the chain?
- The article scope. A certificate for fabric does not certify the finished garment made from it.
Case: A real certificate that covered someone else's fabric
A European buyer sourcing sportswear was shown an OEKO-TEX certificate by a supplier whose website said it was founded in 2010. The certificate was valid, but it was issued to a different company, a fabric maker, and it covered fabric, not finished garments. The supplier's own business licence belonged to a trading company founded in late 2024, and its three websites, registered between 2024 and 2026, gave three different production capacities. The buyer stopped before paying anything. (Details changed to protect the buyer's identity.)
Laboratory Test Reports
A test report is only as good as the laboratory that issued it, and only applies to the sample that was tested.
| Check | What to look for |
|---|---|
| Report number | Ask the laboratory to confirm it directly |
| Laboratory name | Find the lab's contact details independently, not from the PDF |
| Client name | Who asked for the test; it may not be your supplier |
| Sample description | The exact product, model, and material tested |
| Standard | The test method or standard applied |
| Dates | Sample received and report issued |
| Conclusion | Pass/fail for each item, not just a summary |
Two practical points. First, the laboratory itself can be checked like any supplier: find its Chinese legal name and confirm it exists and is active. Second, a lab's English trading name may have nothing to do with its Chinese registered name.
Case: A lab whose English name did not match
A US brand wanted to check the Guangdong laboratory that had issued its product test reports. Searching the lab's English name returned nothing, because the English brand was not derived from its Chinese registered name. Once matched by its Chinese name, the registered address was consistent with what the buyer already had. Checking the lab, not just the factory, closed a gap many buyers overlook. (Details changed.)
Award Certificates and "Credit Rating" Plaques
Supplier showrooms and websites often display certificates such as "AAA Credit Enterprise," "Quality and Integrity Unit," or "Trustworthy Supplier." Many are issued by private rating firms or associations, sometimes for a fee. They are not government credit ratings.
Ask:
- Who issued it? Find the issuer's Chinese legal name and check that it exists, how old it is, and what it is registered to do.
- Is it current? Many carry a validity period.
- What official records say. Compare the award with the supplier's actual court, enforcement, and penalty records.
Case: An award on the wall, a court restriction on file
An overseas buyer asked how a steel supplier had collected so many certificates. One was a "trustworthy enterprise" award. It was genuine but had expired, and it came from a private rating company that had itself been registered only about a year before issuing it, at a shared virtual-office address. The supplier was a one-person trading company registered as a wholesaler, not a mill, and its legal representative had been placed under a court spending restriction for an unpaid judgment weeks before the buyer paid. The award said one thing; the court record said another. (Details changed.) See how to check a Chinese company's enforcement records.
A Certificate Checklist You Can Copy
| Item | Entry |
|---|---|
| Certificate type and standard | |
| Holder name (as printed) | |
| Holder = your contracting company? | Yes / No / Related company |
| Scope covers your product and site? | |
| Valid from / to | |
| Issuer | |
| Confirmed in issuer's database or by issuer? | Yes / Not found / Not checked |
| Date checked | |
| Open questions for supplier |
What a ChineseCheck Report Covers Here
A ChineseCheck credit report lists the certificates and qualifications registered for a mainland Chinese company, such as import and export qualifications, along with its registration details, court and enforcement records, and administrative penalties. It does not verify ISO, OEKO-TEX, or laboratory certificates with their issuers. Use the issuer databases above for that, and use the report to check the company behind the certificate.
Check the company behind the certificate
See a mainland Chinese company's registration, qualifications on file, court records, and penalties in English. A single-company credit report is $299.
View a Sample ReportFrequently Asked Questions
Can I verify an ISO certificate online?
For accredited certifications, yes: search IAF CertSearch by company name or certificate number. If the certificate is not listed, contact the certification body named on it. Not appearing does not prove a forgery, but it does mean you need confirmation from the issuer.
The certificate is real but in another company's name. Is that a problem?
It means the certificate describes that other company, not your supplier. Sometimes the holder is a related factory; ask the supplier to explain the relationship and consider contracting with the certified company directly.
Are "AAA credit" certificates official?
Usually not. Many are issued by private firms or associations. Check the issuer and rely on official court, enforcement, and penalty records instead.
How do I know a test report applies to my order?
Check the sample description, model, and material against your specification, and confirm the report number with the laboratory. A report on a different sample does not cover your goods.
Sources
- IAF CertSearch: iafcertsearch.org. Checked October 2026.
- ISO, Certification: iso.org/certification.html. ISO does not issue certificates.
- OEKO-TEX Label Check: oeko-tex.com/en/label-check. Checked October 2026.
- Cases are from buyer enquiries to ChineseCheck in 2026, anonymized.
