How can buyers verify a CNC supplier certificate?
Match the certificate to the company, manufacturing site, scope and required standard. Read the issue and expiry dates and check the current status with the issuing body or its official verification service before relying on the document.
| Certificate check | Retain in the supplier file |
|---|---|
| Identity and site | The legal entity, production location and a copy of the certificate reviewed. |
| Scope and standard | The stated activities and edition, matched to the buyer qualification requirement. |
| Dates and current status | The printed dates plus a dated result from the responsible certification body or official service. |
| Unresolved discrepancy | The question raised, issuer response and the buyer decision before reliance on the document. |
A scanned image or future expiry date does not by itself resolve current status. Keep the certificate check separate from product approval. For TDB, use the published certificate copies and details linked below as the starting evidence, then confirm current status with the issuer.
published TDB certificate documents. quality-control information.
Identity and location
Check the legal entity and the site where the quoted component will be manufactured.
Scope and standard
Confirm the stated activities and standard or edition against your qualification requirement.
Dates and status
Resolve an expired date, suspension, draft watermark or other inconsistency with the issuing body.
Evidence trail
Keep a dated record of the verification result and any unresolved condition in the supplier file.
Is a scanned certificate with an unresolved watermark sufficient?
No. Request the officially issued version and resolve its status with the certification body. A certificate image, logo or printed future expiry date alone does not establish current validity.
Request a project-specific review
Send the controlled drawing, material, quantity and required evidence through the contact TDB Hanoi page. Confirm the agreed scope in the quotation before releasing work.
For background on management-system standards, see ISO’s quality-management overview. Certificate status must be checked with the responsible certification body.
Certificate evidence for TDB Hanoi
For TDB Hanoi’s published certificate details, company and production-site scope, original documents and the issuing body’s lookup link, see our ISO 9001:2015 certification evidence. The evidence page shows the certificate dates; continue to check the issuing body’s current status during supplier approval.
