... 9,8-10,9-11,11-13MM Nature Stone Roofing Slate of Black Sheets 1.Natural finish.a ... every order ↓In accordance with our Inspection Regulations, which cover color, size thickness tolerance,workmanship, surface treatment, packing way ... S1120, green, greysurface finish: natural, honed, brushed5. Slate Roofing:thickness—3-3.5,4-6,5-7,6-8 ... / Mobile +86 139 2955 1931 Nature Stone Roofing Slate Black Sheets