... and short fabrics, and is widely used in chemical industry, fertilizers, salt industry, pharmaceutical, foodstuff, light industry and so on.How ... Sulphate, Sodium bichromate, Ammonium Sulphate, Boric Acid, Cellulose Acetate, Nitrocellulose, Urea, PVC, Potassium Chloride, Potas- sium Sulphate, Potassium Carbonate, Phosphate, Etc ...