Shanghai Yongzheng Medical Science and Technology Co., Ltd. is one of the earliest clinical contract research organizations (CRO) established in China in 2004, focusing on providing full clinical services for pharmaceutical products research and development. The headquarter is in Shanghai with 2 subsidiaries, "Bujin" and "Helpclin Data", which provides SMO and data management & biostatistics services respectively. Yongzheng has successively taken hundreds of clinical trials including Phase I~IV and post market trials. Yongzheng has experiences in collaborating with many clinical professional departments and therapeutic areas.