1. Start with the real product scope
Confirm whether the supplier actually supports the product families you need, such as LED headlight bulbs, Bi-LED projectors or laser projector systems. Keep the evaluation tied to approved models rather than a generic catalogue claim.
2. Ask for model-specific evidence
Request specifications, optical evidence, testing information and available compliance documents for the exact model under review. Evidence should not be transferred from one model to another without verification.
3. Review the manufacturing and QC route
A B2B supplier should be able to explain how samples, production checks, aging or performance verification and final inspection connect to the approved order.
4. Test the supplier with a structured RFQ
Send product family, application, target market, estimated quantity and OEM requirements. Compare the quality of the answer as well as the quoted price.