optical cable fiberglass yarn has a long service life: it has excellent weather resistance, aging resistance, cold resistance, heat resistance, drying resistance, moisture resistance, antistatic property, good light transmission, no wire formation, no deformation, ultraviolet resistance, high tensile strength, long service life. Beautiful appearance, rigorous structure. The whole screen is made of glass fiber monoprescent coated plain weave yarn, and the rest of the materials are made of PVC plastic once pressed and assembled separately, which solves the problem of too large gap between the traditional screen and the window frame, and the sealing is not strict. The use is safe and beautiful, and the sealing effect is good.