We are the professional chemical manufacturer in China with more than 40 years history. We are the ISO, Halal and Kosher certified factory. We mainly produce Sodium Metabisulfite, Sodium Bisulfite, Sodium Sulfite, Sodium Bisulfate( Anhydrous & Monohydrate), Potassium Bisulfate, Ammonium Hydrogen Sulfate, N-Ethylethyenediamine(NEED), N, N-Diethylethylenediamine, N, N’-Diethylethylenediamine, Barium Oxide