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POLYVA protective film for marble-water soluble bag The protective film for marble-water soluble bag has been in the market for years. Over the past time, its quality has been strictly controlled by Foshan Polyva Materials Co.,Ltd., resulting in great superiority among other products. As for design, it is designed with the innovative concept that caters to the market demands. The quality inspection highly meets the international standards. Its first-class performance is loved by global customers. There is no doubt that it will become popularized in the industry.pvoh film manufacturers,pva laundry bags,pva packaging.