Protopine traits are white translucent flake solid caustic soda is a basic chemical raw material, widely used in papermaking, synthetic detergent and soap, viscose fiber, rayon and cotton fabric and other textile industry, pesticides, dyes, rubber and chemical industry, oil drilling, refining petroleum grease and tar oil refining industry and the defense industry, mechanical industry, wood processing, metallurgical industry, pharmaceutical industry and urban construction and other aspects. Also used in the manufacture of chemicals, paper, soap and detergent, artificial silk and cellophane, processing bauxite alumina, aluminum is also used at the silk textiles, water treatment.