King Sun Chemical & Pharmaceutical Co., Ltd. is an enterprise dedicated to R&D, manufacturing and marketing of intermediates and APIs. It holds and closely cooperates with many chemical and pharmaceutical manufacturers located in Shanghai, Jiangsu, Zhejiang, Chongqing and Tianjin in P.R.China. The mainly cooperative enterprises have passed ISO9002 and GMP audit. King Sun Chemical and Pharmaceutical Co., Ltd. has own technical staff to complete customer synthesis and contract manufacturing through lab trial, pilot production to commercialization.