With extensive support of our skilled quality analysis department, and research & development department, we, Calcutta Overseas Corporation, are one of the leading importers, distributors and exporters of high quality Industrial Chemicals. Our wide range of product includes Acid Slurry and Soda Ash for Detergent Chemicals, Sodium Sulphide and Berrium Carbonate for Paper Chemicals, Sodium Sulphide, Formic Acid, Sodium Formate, Sodium Meta Bisulphate and Sodium Bisulphate for Leather Chemicals, En...