Hunan Keyuan Bio-products Co., Ltd is a scientific and technological enterprise, integrating with researching，developing, manufacturing and marketing. It locates at the foot of the beautiful Nanshan Pasture, covering more than 70,000 square meters. As a high-tech private-owned corporation, it is engaged in pharmaceutical raw materials and pharmaceutical intermediates. we are one of the largest manufacturers of steroid hormone series in China.In 2005，it was awarded the High-Tech Corporation of Hunan. With the strong science and technology strength, the company has developed dozens of products successfully since its foundation, mainly including artemisinin, artesunate, dihydroartemisinin, artemether,steroid hormone series, solanesol, Coenzyme Q10, Paclitaxel, 10-DBAⅢ, Shikimic acid, Octacosanol, Resveratrol, Icariin, 5-HTP, Theanine, Yohimbes, Grosvener siraitia and more than 100 components with plant function. The product quality was certified by ISO9001 and the production technique has achieved the advanced stage in the world.