... above 85 up, thickness tolerance for slab +/-1mm, for tiles:+/-0.5mm,surface flatness: +/-0.3mm;color difference: control ... Description: Green Granite Slab, Granite, Chinese Granite, Granite Tile, Slab, Stone Slab, Stone Black Granite, Granite Stone, Granite Countertop, Stone Product, Granite Panel, Granite Material, China Black Granite, China Black Granite Stone ,Imported Granite(Brazil,Norway, ...