As the leader in scientific research in the granule herbal extract 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 orders 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.
Tianjiang National Laboratory is Certified by ilac MRA and CNAS
in compliance with ISO / IEC Standards