... bulky E-glass 9 micro or C-glass 11 micro fiber yarn, which texturized by high pressure machinesTexturized Glass Fiber Tape, Bulky fiberglass Tape,It ... 's made of best quality bulky E-glass 9 micro or C-glass 11 micro fiber yarn ... It can be coated with aluminum foil , silicone rubber, adhesive back tape, rubber, and graphite on one side or ...