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1 PVA (PVA 088-20 & PVA 1788) water resistance modification PVA (Polyvinyl alcohol) has very low air permeability and is a high-barrier packaging material with excellent performance. Because the molecular chain contains a large number of …

With the continuous development of science and technology, PVA (polyvinyl alcohol) is an important polymer compound and is widely used in various fields. In the market, PVA has many different models, and there are certain differences and …