1.Material: natural slate stone 2.Color: black , grey 3.Size:30x20x0.6cm,rectangle shape 4.CE,SGS 5.rough edge, ... split surface Rectangle natural black roofing slate with two holes ... is widely used in outdoor roofing, paver, and cladding. 3.Size: 30X20CM, 20x60cm, 30x60cm,40x40cm, 40x80cm, etc. 4.Thickness 0.6 ...