1, Waterproofing Membrane 2, lower price than old way 3, good waterproofing quality 4, environment friendly 5, easy process Polyethylene Polypropylene Composite Waterproofing Membrane Production IntroductionThis Polyethylene Polypropylene Composite Waterproofing Material is processed by One-step Extrusion Molding of Full Automatic Production Lines. The raw material include Polyethylene, High ...