... pollutants5.Heat or solvent-welding effectively provides seamless roof coveringsType1. TPO waterproofing membrane of homogeneous or non-lamination (code ... of fiberglass and nonwoven (code G)5.TPO waterproofing membrane which utilizing a fabric backing and with ... and non woven(Code GL)UsageWidely used in waterproofing engineering such as roof, basement , water conservancy, dam,tunnel, supermarket ...