The sodium sulphate anhydrous and soda ash exported are widely used in industries such as synthetic detergents, vinylon, dye and dyeing, glass, pharmaceuticals, leather and rubber. The Ammonium chloride is widely used in producing dry battery, for adding reagent of ammonium salt, dying assistant, electroplating bath and analytical reagent, and for medicine, hot investment casting and camera. And Urea is used in manufacture of agrochemical, rubber, textile, disinfectant, dye, etc.