... 4kg /bobbin High intension strength. Fiber glass yarnE-glass or C-glass Fiberglass yarn, Using glass yarn ball as the raw material, with ... technology and equipment, strict management and scientific detection. This fiberglass yarn has the properties of insulation, fireproof, softness, high strength, ... properties.Filament diameter (μm): 9, 11, 13Tex: 50~272 texBobbin yarn: 4kg /bobbin fiber glass Yarn