What to Do If a COA Lacks Critical Specifications?
Quick AnswerWhen a parameter is not listed on the COA, mark it as not provided or not tested and request supplementary records from the issuer. Do not deem the entire lot compliant before contractually required items are verified.
Identify the Omissions First
Cross-check against the contract, the client-approved specification list, applicable test methods, sampling unit, and line items on the certificate. A blank against any item must not be treated as a zero, a compliant value, or an automatic non-conformity.
Supplementary Documentation and Retesting
Confirm with the issuer whether the item was tested, the method used, and the original records; arrange for sample retention or third-party retesting if necessary. Any retest must document the sampling chain, batch, laboratory, method, and date, with conformity determined per mutual agreement.
Sources & Further Reading
- RIOMI 橡胶业务编辑与项目经验（2026-10 编审）