... more advanced functions, It has the characteristic of aeration, heat insulation, fireproofing, durableness,easy-assembling and more advanced functions, good-looking ... quality,compared with the traditional material.Surface: modified PVCCore layer: foam high polymer Specifications: Thickness: 2mm, 2.5mm, 3mm Width: 1 ... , dark blue,green, yellow, white, terra-cotta 3layers UPVC Heat Insulation Roof Tile