More better waterproof This plastic is PP. Full name of PP is polypropylene.The physical properties of polypropylenes are: corrosion resistance, acid and alkali resistance, hardness. Perfect concrete wall For its wear resistance, it will be always easy to release and the surface will be always bright. While, the normal film faced plywood performs well only for one or two times. But after using two times, it will hard to release for the surface wear during the using process. And the surface will be damaged which will lead to the rough surface.