We are both manufacturer and trader , our main products are inorganic chemicals, include Sodium Metabisulfite, Zinc sulphate , Manganese Sulphate, Magnesium Sulphate, Ammonium Chloride, Zinc Oxide, Manganese Carbonate and so on.We would supply you with high quality with reasonale price, our company has been on this line for more than ten years, with highly appraise in this area, so you could take sure of our reliability.