Here is a brief company history. Yantai Dongcheng Biochemical Company was founded in 1993 and is the largest biochemical and pharmaceutical manufacturer in China. The company is equipped with advanced state-of-the-art processing plants, and is staffed by a team of accredited Biochemists with extensive expertise in areas of research and production. This ensures our products have consistent high quality. Yantai Dongcheng is committed to producing a superior product. A copy of GMP certification, ISO9001 certification of Norway DNV and FDA DMF, is available