Nanjing Shunxiang specializes in the R & D, production, sales and information of pharmaceutical chemical intermediates. It mainly produces amino protectant series, azo series and pyridine series. The main varieties are: Di tert butyl dicarbonate (Diboc, BOC anhydride), diisopropyl azodicarbonate (DIAD), pyridinium trioxide, pyridinium tribromide, pyridine hydrochloride, Pyridinium 4-toluenesulfonate. Nanjing Shunxiang is the forerunner in the production of Di tert butyl dicarbonate. With 20 years of production experience, technological optimization and innovation and a mature production technology team, the products have been highly recognized by the market. In 2012, the company became the supplier of Novartis, Abbott, Pfizer and other international well-known enterprises. Nanjing Shunxiang is one of the leading enterprises in the production of Di tert butyl dicarbonate, the number of shipments and users in the international market has always been in the forefront. At present, the company has three production bases. With the completion and operation of Lanzhou Tengxing biological plant, the production capacity of main products will be further expanded, and provide users with stable product supply guarantee.