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4x8 5 PCT PVC Foam Board:PVC, the full name is Polyvinylchlorid, the main ingredient is polyvinyl chloride, and other ingredients added to enhance its heat resistance, toughness, ductility and so on. The top layer of this surface film is lacquer, the main ingredient in the middle is polyvinyl chloride, and the lowest layer is back-coated adhesive. It is a kind of synthetic material that is popular, popular, and widely used in the world today. Its global use ranks second among various syntheti