Liquid caustic soda is an important basic chemical raw material with a wide range of uses. In the chemical industry, it is used in the manufacture of formic acid, oxalic acid, borax, phenol, sodium cyanide, soap, synthetic fatty acid, synthetic detergent, etc. In the textile printing and dyeing industry, it is used as a solvent for cotton cloth desizing agent, scouring agent, mercerizing agent, vat dye and Haichang blue dye. Used in the smelting industry to manufacture aluminum hydroxide, aluminum oxide and metal surface treatment agents. In the instrument industry, it is used as an acid neutralizer, decolorizer, and deodorizer. The adhesive industry is used as starch gelatinizer and neutralizer. In addition, it is widely used in enamel, medicine, cosmetics, tanning, coatings, pesticides, glass and other industries.