Product Certificate of Analysis (COA)

As the leader in scientific research in the granule herb industry and the world's largest manufacturer, Tianjiang established a CNAS-certified national laboratory to conduct product quality testing and research. To ensure the safety and quality of the products, every batch of herbal extracts, including bulk order herbal extracts, comes with the product's Certificate of Analysis (COA) from the laboratory. Certificates of Analysis provided for every batch include the results of testing for authentication, heavy-metals, pesticide residue, and microbiological content.