... ) Wide used in project 100% natural stone roofing slate(factory dircety sale) Material:100% natural marble, granite, sandstone, travertine, ... (MPa)BENDING STRENGTH:58(MPa)HARDNESS:158STONE:100% NATURAL STONE Stone Formculture stone,Blocks,Slabs(Cut to sizes),Tiles, and custom ... effecthigh and elegant ,so it is a ideal kind of modern decorative stone.Quality ControlThickness tolerance for tile: +-0 ...