1.Good insulation, 2.heat resistance, 3.corrosion resistance, 4high mechanical strength `````` ... heat insulation, sound insulation (especially wool), high tensile strength, good electrical insulating properties (such as E-glass fiber). Brittle, poor ... to made of packing cloth, window screening, paste, cover cloth, protective clothing, and absolute power, insulation materials. 150*1/2 fiberglass yarn