Purchasing & Quality / Purchasing guide
A certificate is useful only when its identity, scope and relevance to the purchasing requirement are understood. Read the named organisation, covered activities, locations and validity information, then verify it through the appropriate issuer or recognised channel. Do not treat a logo or a cropped image as complete evidence.
Catalogue reference image. Confirm the quoted configuration against the agreed drawing.
Match the document to the requirement
Identify what evidence your project actually requires and who is responsible for determining that requirement. A management-system certificate, a material report and a product test report answer different questions. Ask for the complete document and distinguish those categories before accepting a supplier’s general statement of certification.
Check identity and scope
Compare the organisation and location on the document with the entity and operation involved in the order. Read the covered activities and any stated limits. Where authenticity or current status matters, verify with the issuer or its published verification route rather than relying only on a forwarded image.
Connect evidence to the ordered product
If the requirement concerns a material or product result, check that the report identifies the applicable sample, construction or batch and the stated test conditions. Do not transfer a result to a different configuration without the responsible technical review. Record unresolved questions before the order is accepted.
Information to include in your enquiry
| Review item | Information to provide |
|---|---|
| Type | Management system, material record or product test |
| Identity | Named entity, location and issuer |
| Scope | Covered activities and stated limitations |
| Relevance | Connection to the actual order and configuration |
Frequently asked questions
Does a management-system certificate prove every product claim?
No. Product-specific requirements need their relevant supporting evidence.
Can a certificate logo replace the full document?
No. Request the document details needed to assess scope and verify authenticity.
Discuss your carbon fiber component
Send your drawing revision, intended application, quantity and acceptance requirements to Litian Yunde for a project review.