... Using Al-Zn Coating as the base plate, and the colorful stone chip as the surface. It's ... friendly, and economicical5. Sturdy and durable: The base of colorful stone-coated metal roofing is galvalume, more durable ... the best in China. (2). The weight of Aluminium and Zinc of tiles per sq.m. is 210 g , which ... the stone-coated roof tile with many colors, such as red, red black, teak, coffee, green, dark ...