Glass fiber is an inorganic non-metallic material with excellent performance. Its main components are silicon dioxide, aluminum oxide, calcium oxide, boron oxide, magnesium oxide, sodium oxide, etc., with high tensile strength and low elongation (3%) ; High elasticity coefficient, good rigidity; large elongation within the elastic limit and high tensile strength, so the impact energy is absorbed; inorganic fiber, non-combustible, good chemical resistance; low water absorption; dimensional stability, heat resistance Good properties; good processability, and can be made into products of different forms such as strands, bundles, felts, and woven fabrics.