Changsha Hekang Chemical Co.,Ltd, was established in the year 2007. Production plants are located in Hunan and Shanxi Province. Our factories can produce 20,000 tons Sodium Cyanide and 10,000 tons Sodium Dimethyl Dithiocarbamate per year. Our solid sodium cyanide is made from light oil splitting decomposition method, Sodium Dimethyl Dithiocarbamate by reactive Dimethylamine & Sodium hydroxide & Carbon disulfide method. We keep trying to develope...