Bitumen membrane English: bituminous waterproof sheet: upper and lower layers and the adjacent two joints should be staggered one-third of the width of the web. Polypropylene. Impact: Increased tolerance mortar matrix deformation, thereby improving the toughness and impact resistance. (5) Tensile: Using fiber can play a role in improving the tensile strength of the matrix. Polypropylene, waterproof Shouguang Tianxiang, polypropylene prices by Shouguang City Tianxiang waterproof material plant. Polypropylene, waterproof Shouguang Tianxiang, polypropylene prices Shouguang City Tianxiang waterproof material plant (www.txfscl.com) this year introduced a new upgrade, the above picture is for reference only, please call the telephone or pictures on this page, for the latest information Contact: Zhang Guang.