Tiles specifications: a) Standard size: 12" x 12" , 18" x 18", 24" x 24" ...... b) Tiles thickness: 10mm, 12mm, 15mm, 20mm ...... c) Tiles finishes: polished, flamed, honed, saw cut, sandblasted, bush- hammered, chiseled d) Tiles packing: seaworthy wooden crates with careful inner protection 4) Quality Control: The thickness tolerance is calibrated from +/-5mm, polish degree is 85～up