... 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 flakes is white crystal flake with ... . Tianjin xingkai chemical Co., Ltd is professional manufacturer of caustic soda flakes, pearls, liquid and solid, which was established ...