Since the partially alcoholized PVA contains more acetate groups, and the volume of the acetate group is much larger than the hydroxyl group, there is a large steric hindrance, so that the partially alcoholized PVA cannot form a compact crystal structure. It can only form loose structures with large

water solubility. Soluble in cold water, soluble speed can be planed, non-toxic and pollution-free.

1. fast solution film Pesticides and chemical products are packaged in inner bags, which can avoid touching pesticides and chemical products by hand. There is no residual pesticides in plastic bags. The cement additive packaging bag avoids dust flying and harms the environm