RST International Chemical Co.,Ltd ,is a leading caustic soda flakes and pearls manufacturer in the north of China. RST CHEMICAL main products: a.caustic soda flakes,caustic soda pearls, caustic soda solid. b.Oil drilling chemicals series : (Caclium Chloride, Magnesium Chloride, Calcium Bromide, Sodium Bromide, Sodium Formate, Potassium Formate, CMC,etc.), c.Water treatment series : (Polyaluminium Chloride, CaCl2, MgCl2, Cyanuric Acid, etc.) d.Food additives series : (Sodium Metabisulfite, Citric Acid Mono/Anhy, Sodium Bicarbonate, Magnesium Sulphate,etc.), e.Other chemical series : (Soda Ash Light/Dense, Caustic Soda Flakes, Choline Chloride, Sodium Lauryl Sulfate,etc.)