Longschem Co., Ltd., with 2 factories and 1 R & D Center, is specialized in the development, manufacture and sales of APIs, pharmaceutical intermediates, Chiral Compounds, intermediates for pesticides and dyes, hormones and fine chemicals. To ensure our advantages in products and technologies, we have cooperated with Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences，Zhejiang University and East China University of Science and Technology...