Founded in 1995, Shanghai Huiyuan Industry Co., Ltd. is a chemical research company and a comprehensive research, development and trade enterprise of chemical products and technologies. Our main products are all kinds of fine chemical intermediates: Alkyl carbonates (including dimethyl carbonate, dimethyl malonate, diethyl malonate, ethyl acetoacetate, ethylene carbonate, diethyl carbonate, etc.), Alcohols (including organic alcohols, polyols and alkoxides, etc.), Nitrogen containing compounds (including carbamate, hydrazine hydrate, amines, heterocyclic ...