Xi`an Shengtian Biological Engineering Co., LTD is located in  Xi`an, a famous ancient city of China. It is a high-tech enterprise specialized in the plant extracts?research and development, producing and marketing. The company has strong technical force, has been engaged in the development and production of natural plant cultivation, research and development as well as plant extracts for many years. Shengtian has successfully developed dozens of active ingredient monomer, nearly a hundred kinds of Standard plant extracts and proportion of extract.