Chemical name: Sodium hydroxide; commonly known as: caustic soda; caustic soda; caustic soda; caustic; solid caustic alkali traits: white translucent sheet of solid, industrial-grade caustic soda in accordance with national standards (GB209-2006) provision allowing microstrip color, which is caustic impurities in showing color. Widely used in papermaking, synthetic detergent and soap, viscose, rayon and cotton fabrics and other textile industry, pesticides, dyes, rubber and chemical industry, oil drilling, refining petroleum grease and tar oil refining industry, and national defense industry, machinery industry, wood processing, metallurgical industry, pharmaceutical industry and urban construction and so on. Also used in the manufacture of chemicals, paper, soap and detergents, rayon and cellophane, processing bauxite alumina system, also used silk textiles at the water treatment and so on.