Chengdu Pukang Biotechnology Co., Ltd was located in industrial center of chengdu in western China. We have some doctors majored in synthesis and cooperated with professors in Huaxi pharmacy university.Win-win cooperation and we grasp the advanced information in drug synthesis. Our highly efficient and professional R & D team, as well as strict quality control system, guarantees the quality of our products. All our products must be strictly tested with precision instrument MS, NMR and HPLC