... but durable,smooth surface 3.Jiujiang Port Natural Roofing Slate of Black Sheeting 1.Natural Slate Roofing finish. S-0302ZPThis slate is ... : black, yellow quartzite P014, rusty S1120, green, greysurface finish: natural, honed, brushed3. Step/Stairs:thickness—20-30mm / size—350*1200 ... copy of B/L13. Contact:Teresa Fan / kinslate at kinslate.com / +86 20 8412 0625 / Mobile +86 139 2955 1931 Natural ...