... is mainly used as high grade roofing materials. Features of 3-LAYER UPVC Heat Insulation Roofing Tile Strictly selected materials: The adopting ... out different anti-aging treatment on each layer of material, UPVC inner layer and outer layer are added with ultraviolet absorber, screening ... Color Green, Blue, Grey, Yellow, White, Red, Terra-cotta 3-layer upvc heat insulation roof tile(3L-UPVC-WS)