Polyvinyl alcohol (PVA) is a water-soluble polymer with a wide range of applications. PVA can quickly dissolve in water to form a stable colloid. Its performance is between plastic and rubber. In addition to being used as fiber raw materials, it is also widely used in the production of coatings, adhesives, paper processing agents, emulsifying agents, dispersants, films and other products. It is widely used in textile, food, medicine, construction Wood processing, papermaking, printing, agriculture, steel, polymer chemical industry and other industries.