Sealing material using polyether polyurethane. Such as the use of other sealing materials polyester Which is good, it should not contain mineral oil, petroleum jelly and other chemicals that affect performance polyethylene products. Polyester is a synthetic fiber is an important species, is the trade name of polyester fiber. It is purified terephthalic acid (PTA) or dimethyl terephthalate (DMT) and ethylene glycol (EG) as raw materials by esterification or transesterification and polycondensation obtained fiber-forming polymer - - polyethylene terephthalate (PET) at the corner shop should add an additional layer; yin and yang angle, etc. are made of R = 20mm rounded. Polyester polyethylene waterproofing membrane, waterproof Shouguang Tianxiang (certified), provided by Shouguang City Tianxiang polyester waterproof material plant. Shouguang City Tianxiang waterproof material plant (www.txfscl.com) Shandong Weifang, waterproof, moisture-proof materials, leaders, 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 a waterproof Shouguang Tianxiang a better future.