Document evidence · verification guide
How to verify Chinese supplier certificates and test reports
A polished PDF can be authentic and still be irrelevant to your purchase. Verify the issuer and status, then prove that the named company, site, product, model, standard and tested sample connect to the goods you plan to import.
Do not ask only
“Is this certificate real?” Ask: “What claim does this document support, for which entity, product, site, date and market?”
- Editorial status
- Source-checked buyer guide
- Last reviewed
- Prepared by
- AllForSourcing Editorial Desk
Research basis: Current ISO and IAF certification guidance, ILAC accreditation structure, EU NANDO records, and current FDA and CPSC regulator guidance.
Boundary: This is a document-verification workflow, not a conformity assessment, legal market-access opinion, laboratory review, product approval, or finding that goods comply with a destination market.
Direct answer
Use a three-link test: document → subject → order
- 01
Document
The issuer, database record, status, scope and report number are independently confirmed.
- 02
Subject
The legal entity, site, product, model, sample and standard on the document are identified exactly.
- 03
Order
Your specification, BOM, factory, production controls and shipment can be traced to the verified subject.
If any link is missing, record an evidence gap. Do not upgrade “document received” to “product compliant.”
First identify what kind of document it is
| Document | What it may address | What it does not automatically prove |
|---|---|---|
| Management-system certificate | A named organization/site and certification scope were assessed against a management-system standard | That your product passed testing or every shipment is conforming |
| Product certificate | A defined product/model under a named certification scheme | Products outside the model/scope or goods changed after certification |
| Laboratory test report | Results for the sample(s), methods and dates recorded in the report | That untested production is identical or that every applicable rule was assessed |
| Declaration of conformity | The responsible manufacturer’s/importer’s declaration against listed legislation or standards | Independent third-party certification unless the applicable regime requires and identifies it |
| Registration/listing record | An establishment, operator or product appears in a regulator’s registration/listing system | Approval, clearance, certification or legal marketing status unless the regulator says so |
| Inspection report | Observed conditions and results at a stated time, site and lot | Laboratory competence, certification status or future production performance |
The verification workflow
1. Obtain the complete original file
Ask for every page, annex and schedule in the highest available resolution. Preserve the supplier message, file name, received date and claimed purpose. A cropped front page removes the scope where the useful limits often sit.
2. Classify the claim
Write one sentence: “Supplier claims this document shows [entity/product/site] meets [standard/rule] for [market/use].” Verification becomes much easier when the claim is explicit.
3. Verify through a channel you found independently
Use the certification body, regulator, accreditation body or laboratory website reached independently—not the phone number, QR destination or email printed on the PDF alone. Search the certificate/report number and subject name; if no database is available, contact the issuer through its official domain.
4. Confirm status and scope
Check active, suspended, withdrawn or expired status; standard and edition; certified location; activity/product scope; model list; limitations; and issue/expiry dates. A genuine certificate can be out of scope.
5. Verify the issuer’s authority for that exact work
For a certification body, confirm the relevant accreditation and scheme. For a laboratory, confirm the legal lab entity, site and accredited scope cover the test method—not merely that the lab holds some accreditation.
6. Match the document subject to the supplier
Reconcile the Chinese legal name and address with the business-license record. If the document names a parent, affiliate, trader or different factory, request the relationship and why the evidence applies.
7. Match the tested or certified subject to your order
Compare model, photos, dimensions, materials, BOM, component brands, colour, software/firmware, packaging, age grading and intended use with your controlled specification.
8. Record what remains unproven
Note missing standards, untested variants, old samples, material changes, unclear sample selection, reports supplied by another company and any reliance that needs professional review.
Use the right verification system
ISO management systems
ISO develops standards but does not certify organizations. For accredited management-system certificates, IAF CertSearch can show certificate status, standard, scope, locations, certification body and accreditation body. No result is a follow-up item, not automatic proof of fraud; confirm with the named certification body.
Laboratory accreditation
ILAC lists signatory accreditation bodies. Use the relevant accreditation body’s official directory to verify the laboratory, site and detailed scope. “ISO/IEC 17025 accredited” is incomplete if the cited test method is outside that scope.
EU notified bodies
NANDO lists notified bodies, identification numbers and the legislation/tasks for which they are designated. A familiar logo or four-digit number does not show that the body was authorized for your product procedure.
U.S. product rules
Use the regulator’s own databases and product-specific rules. For children’s products, CPSC acceptance is test-rule specific, and the U.S. importer—not the laboratory—has certificate responsibilities for imported products.
“FDA certificate” requires immediate classification
FDA states that medical-device establishment registration and device listing do not denote approval, clearance or authorization, and that FDA does not issue device-registration certificates to facilities. FDA also warns that private documents can be made to look official.
Ask which FDA database record, clearance, approval, authorization, registration or listing the seller means. Then verify the exact facility and product through the appropriate FDA system. Do not accept a decorative “FDA Registered” PDF as a substitute.
Read a test report past the word “PASS”
| Report field | Question to answer | Common gap |
|---|---|---|
| Applicant/manufacturer | Which legal entity submitted and made the sample? | Trader’s report presented as factory evidence |
| Sample identification | Can photos, model, BOM and markings match your specification? | Generic family model or missing annex |
| Sampling source | Who selected and supplied the test sample? | Supplier-picked sample with no production trace |
| Standard/method | Is the correct edition and every applicable part listed? | Outdated or partial testing described as complete |
| Dates | When was the sample received, tested and reported? | Report predates a material, factory or design change |
| Results | What actual values, limits, uncertainty or observations sit behind the conclusion? | Summary page hides a fail, deviation or untested clause |
| Authorization | Can the issuer confirm number, file integrity and status? | Altered name/model on an otherwise real report |
Document red flags worth escalating
- Issuer email uses a free or look-alike domain
- Certificate number is absent from the issuer’s database or belongs to another entity
- Fonts, names, dates or model references differ between pages
- Only a screenshot, cover sheet or low-resolution crop is supplied
- Scope says “trading” or another activity while the seller claims manufacturing coverage
- Lab accreditation exists but not for the cited method or lab location
- Product photos, rating label, dimensions or materials differ from the order
- Supplier resists issuer confirmation or says verification is confidential without offering a route
Keep a verification record that survives handoff
Record the supplier claim, document type and number, issuer, independent verification URL/contact, status, scope, legal entity/site, product/model/sample, standard and edition, report date, match to your specification, unresolved gaps, reviewer and decision date. Store the file actually reviewed—not a later replacement with the same name.
Public source citations
ISO: Certification
iso.org | official standards guidance | checked 2026-07-15
DOC-02IAF CertSearch: certificate verification
iafcertsearch.org | official accredited certification database guidance | checked 2026-07-15
DOC-03ILAC signatory search
ilac.org | official accreditation cooperation directory | checked 2026-07-15
DOC-04European Commission: Notified Bodies and NANDO
ec.europa.eu | official EU conformity-assessment guidance | checked 2026-07-15
DOC-05FDA: Are there FDA registered or certified medical devices?
fda.gov | official regulator guidance | checked 2026-07-15
DOC-06CPSC: Children's Product Certificate
cpsc.gov | official product-safety guidance | checked 2026-07-15