1.ptfe membrane fiberglass cloth 2.ISO9001:2008 3.USA standard 4.customize accept Fiberglass cloth Function:1. heating proof , it can work for a long time under 260°C.2. Good separating for powder, saving energy consumption .3. Steady size,non shrinking under proper temperature.4. Intensity high, obstruction more than 99% code thickness.Packaging ptfe membrane fiberglass cloth