Even the roof exposed, exposure to the sun is not a problem, because the waterproofing membrane is to be done on top of the protective layer, insulating layer, rather than direct it waterproof layer is disposed in the open air; polyethylene resin as the main raw material, polypropylene, add more adjuvants, surface (two-sided) composite woven polypropylene, the calendering process forming a polymer composite web (sheet). Bitumen membrane English: bituminous waterproof sheet: polyethylene polypropylene | Shouguang Tianxiang waterproof (Online) | 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.