... E-glass Tex: 50~272 tex Bobbin yarn: 4kg /bobbin High strength Plastic bube or paper core E-glass ... or C-glass Fiberglass yarn, Using glass yarn ball ... , strict management and scientific detection. This fiberglass yarn has the properties of insulation, fireproof, softness, ... , 11, 13Tex: 50~272 texBobbin yarn: 4kg /bobbin glass fibre bobbin yarn