Glass fiber is an inorganic non-metallic material with excellent performance and an important part of fiberglass sunscreen fabrics. The ingredients are silica, alumina, calcium oxide, boron oxide, magnesium oxide, sodium oxide and the like. The fiberglass solar screen fabric is made of natural minerals (quartz, sand, soda, lime). Before weaving, each glass fiber is coated with PVC, knitted by one stitch, and finally heat-set and reinforced. This form in a regular weave fabric. The composition of fiberglass solar screen fabrics is 35% fiberglass and 65% PVC or 30% fiberglass and 70% PVC according to different openness.