Water-soluble PVA film is a new concept of environmental protection packaging material, which has been widely used in the packaging of industrial, chemical products and civil products in Europe, America, Japan and other countries. For example: pesticides, fertilizers, dyes, detergents, water treatment agents, mineral additives, detergents, concrete additives, photographic chemical reagents and garden care chemical reagents, can also be used as rapeseed, plant seed bags, clothing bags.