... Grade Sodium Hydroxide Apparence:flake,pearl,solid Purity:99%96% Widely used in oil refining,detergent,soap field. Product: Industry Grade Caustic Soda Pearl 99% The caustic soda ... request. Tianjin xingkai chemical Co., Ltd is professional manufacturer of caustic soda flakes, pearls, liquid and solid, which was established in 1995. Now ...