It is mainly used as substrates for water-proof roofing materials such as SBS,APP modified ... saturating speed , relative low costs. It is mainly used as substrates for water-proof roofing materials such as SBS,APP modified ... , anti-embrittlement , strong weather ability 4)good anti-leakageApplication:1)Substrates of modified asphalt,waterproof roll and color pitch fiberglass tile ...