Knowshine (Shanghai) Pharmachemicals Inc. is a professional semi-synthesis & decoration research and production Hi-tech enterprise, mainly concentrated on research & manufacturing anti-cancer drugs and various chemistry contract order & technical support,main products as follow: paclitaxel,docetaxel,irinotecan,topotecan,10-HCPT,SN-38,side chain of taxol and docetaxel, and varied chemicals order.