PTFE coated fiberglass cloth/fabric 1: have good machenical ... ratio is 6-13%;6). High capability of insulation (small permittivity: 2.6, the tangent is ... patch, membrane, belt of heat enveloping patch;3. High insulation of electric: insulating belt of electric, septa, cushion, ... heat resisting envelope, terrace base-material, enswathing of heat insulation;5. micro wave gasket, oven gasket, food drying ...