- Polypropylene done must be done after a 5 cm above the protective layer of cement, pure polymer polypropylene waterproofing membrane, in the sun for a year or two will be able to be finished polypropylene Which is good, the sun overlapping edges month They can leak. - Polypropylene PP hard lap, if ground subsidence-prone areas, it is best not to use. Bitumen membrane refers to the fetal membrane and without fetal membrane. Those who use thick paper or glass cloth, asbestos cloth, cotton fabric and other materials impregnated tire roll materials made of asphalt, called the fetal membrane; asbestos, rubber powder incorporated into asphalt materials polypropylene manufacturers, by RCC shaped material made of rolled coil that is called without fetal membrane. Preparing a flame-retardant polypropylene fibers. P - bromine synergistic flame retardant system for polypropylene fiber has good flame retardant effect polypropylene specifications, environmental pollution, and phosphorus - nitrogen synergistic flame retardant system for polypropylene fiber has better flame effect, but the relatively high application conditions in polypropylene fibers. Which polypropylene | Shouguang Tianxiang waterproof (certified) | polypropylene provided by Shouguang City Tianxiang waterproof material plant. Shouguang City Tianxiang waterproof material plant (www.txfscl.com) Shandong Weifang, waterproof, moisture-proof material leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Shouguang Tianxiang waterproof leadership with the staff warmly welcome all inquiries negotiations to create Shouguang Tianxiang waterproof better future.