Polyether urethane sealing material used. Such as the use of other sealing materials PP 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 variety of polypropylene cheap Which 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) preparing a flame-retardant polypropylene fibers. P - bromine synergistic flame retardant system for polypropylene fiber has good flame retardant effect, environmental pollution, and phosphorus - nitrogen synergistic flame retardant system for polypropylene fiber has better flame-retardant effect, but application conditions is relatively high in polypropylene fibers. Polypropylene Polyester | 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.