... durability,antiacid.Widely used in building project Product type: square slate roofing,square roof tiles,slate tiles,shingles,weather proof tile Slate ... ,rusty,green,grey,etcFinishing:Natural cleft,Split Surface,Sawn Surface,Nail holes,heart shape,round shapeSize:10x10cm 10x20cm 30x30cm 30x60cm 15x60cm ...