... weaving material to plain knit or specially knit into superior fiberglass basic cloth, coated with fine PTFE resin then make it ... almostly resist most of chemical medicines,acids,alkalis,and salt;fireproof,lower in aging.4. Low coefficient of friction and dielectric ... weaving material to plain knit or specially knit into superior fiberglass basic cloth, coated with fine PTFE resin then make it ...