Polyvinyl chloride (PVC) waterproof membrane for water conservancy or special engineering projects Product Features The PVC waterproofing membrane for water conservancy/special is a thickened special waterproof material customized for extreme environments with high corrosion and high water pressure. Made of corrosion-resistant polyvinyl chloride resin as raw, it is added with a large amount of special additives resistant to acid, alkali and chemical corrosion, paired with a