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Zhejiang Tianrui Chemical Co., Ltd.Virtual Booth: Zhejiang Tianrui Chemical Co., Ltd.Zhejiang Tianrui Chemical CO., Ltd., situated in south industrial zone of Longyou county, Zhejiang province, China, is a high-tech enterprise, specializing in R & D, production, sales and technical services of L-Theanine, L-Pyroglutamic acid,L-Asparagine, D-Aspartic Acid, L-Glutamic acid etc. Our plant is designed, built and operated according to the standards of pharmaceutical enterprises. Perfect quality control and quality assurance systems are established in accordance with ICH Q7 Guidelines. Our products obtained FDA GRAS, HACCP, KOSHER, HALAL and other international certificates. We are authorized to the right of import and export, established business relationships with companies from more than 30 countries and areas, with good reputation. Adhering to the top R & D capacity and the excellent quality, we are the largest professional L-Theanine, L-Pyroglutamic acid, L-Asparagine, D-Aspartic Acid, L-Glutamic acid with top productivity and sales in China, gradually establishing brand advantage.