How to Verify the Actual Production Factory of Natural Rubber?
Quick AnswerFor fixed-source requirements, the corporate group, legal entity, and exporter must be distinguished from the actual production site, and the grades supplied by that site shall be verified using traceable certificates and multi-batch delivery records.
Basic Information
Ask for the factory name, address, meaning of production line or plant code, grade range, and certificate issuer; when entities across documents are inconsistent, a written explanation shall be required.
Continuous Supply
Compare COAs, batch numbers, and packaging markings across multiple batches, and implement factory change notification, sample approval, and incoming inspection as required by the customer. One qualified sample is insufficient to prove that subsequent batches all originate from the same plant.
Sources & Further Reading
- RIOMI 橡胶业务编辑与项目经验（2026-10 编审）