A reliable TCM granules supplier should be able to show current GMP documentation and explain which facility and processes it covers. Check the issuing body, validity dates, and product scope; a certificate alone does not confirm every batch is consistent. Ask how incoming herbs are identified and how mixing, drying, and packaging records are kept. Paperwork is not proof.
Review a recent batch certificate of analysis and confirm it names the tested material, methods, and results. Testing may cover identity, microbial quality, heavy metals, and pesticide residues, depending on the product and destination requirements. Ask whether samples are retained and whether an independent laboratory can verify results. A polished dossier can still leave gaps. Compare batch numbers across labels, test reports, and shipping records, then request a traceability exercise for one lot. It should connect raw-material records to finished goods without missing links.
Export checks deserve the same care. Confirm that invoices, certificates, product descriptions, and packaging details match the destination market’s requirements. Request examples of past export documents with sensitive details removed. I would not treat one clean audit as lasting assurance; staff, sites, and processes change. Recheck documents periodically, and record unanswered questions before placing a large order. A supplier’s willingness to correct small inconsistencies can be more revealing than a perfect-looking brochure.