stitched mat glassfiber 1.fiberglass strand 2.density 110-180kg/m3 3.heat insulation, damping stitched mat glassfiber1. producingGlass fibre stitched mat is made from fiberglass strands chopped to cut in fixing length, and then after dealing with devillicate, fluffing, needling to make to end product. It is ceaselessly sewn by thousands of stitched.2. featureLong time operating temperature: 650° ...