Bitumen membrane English: bituminous waterproof sheet: using paper, fiber blankets dipping asphalt matrix material, surface spreading powdery, granular or flaky material rollable sheet waterproof material. Polypropylene. Bitumen membrane English: bituminous waterproof sheet: fiber composite waterproofing membrane is a native of polyethylene synthetic polymer material is added to anti-aging agents, stabilizers, adhesion promoters and other new and high-strength polyester filament non-woven polypropylene, through automation production lines once new composite made of waterproof membrane. PP _ _ PP waterproof Shouguang Tianxiang Which cheaper by Shouguang City Tianxiang waterproof material plant. _ _ Shouguang Tianxiang waterproof polypropylene PP Which is cheaper Shouguang City Tianxiang waterproof material plant (www.txfscl.com) this year introduced a new upgrade, the above picture is for reference only, please call Tel picture on this page or to obtain the latest Information, Contact: Zhang Guang.