... different anti-aging treatment on each layer of material, UPVC inner layer and outer layer are added with ultraviolet absorber, screening ... strength.Thermal insulation and sound insulation: The composite core layer structure, and multiple modifiers can effectively block the solar ... , 1130mm, 1350mm; Trapezoid shape:900mm,1130mm,1350mm, Thickness 1.5mm, 1.8mm, 2.0mm, 2.5mm, 3.0mm Length Customerized ...