... largest manufacturer in China Caustic Soda 96%99%used in soap manufacturing ,petrochemical industry, water treatment, pharmaceutical industry, mining industry, ... chemical feed, used as textile industry, printing, detergent, paper=making, soap-making, metallurgy, glassenamel, medicament, oil-refining and making synthetic fiber ... kinds of organic-mediacy, etc. caustic soda flake/Caustic soda flakes