... professional manufacturer 2.near by the raw material of Sodium Hydroxide(naoh) flake pears and other content. 1 ... after comfirm order5 .Application: The use of caustic soda/sodium hydroxide and alkaline desiccant, paper, aluminum smelting, refining ... of metallic sodium, water electrolysis, as well as inorganic salt production, preparation of borax, chromium salt, potassium permanganate, phosphate, etc ...