we are one of the leading of the manufacturer of raw material for pharmaceutical industry, chemical industry as well as fine chemical industry, and received GMP Approval in Jan. 2005. We are also the largest producer for all Bismuth related raw materials, such as Bismuth Subnitrate, Bismuth Subcarbonate, Bismuth Subgallate, Bismuth Citrate, Colloidal Bismuth Pectin, Bismuth Aluminate and the pharmaceutical media as Bismuth Nitrate, Bismuth Citrate. Certainly, including other raw materials of inorganic synthesis, such as Citric Acid Series, Calcium Series, Sodium Series, Potassium Series?etc.