Polyethylene polypropylene polymer composite waterproofing membrane is a polymer composite coil (sheet) which is made of polyethylene resin as the main raw material.Adding various additives,then once formed by calendering process , and is a surface (double-sided) composite polypropylene non-woven fabric . A multi-layer polymer synthetic sheet material is selected, is a new type of waterproof material manufactured by a new technology and process. The product has high tensile strength, strong impermeability, good low temperature flexibility, small expansion coefficient, easy adhesion, small friction coefficient, can be directly used in sand, stable and reliable performance, is a non-toxic, non-polluting Green products.