... , 18mm, 20mm, 30mm12.packing:wooden case,seaworthy wooden crate.13.super white non porous crystal stone for decoration qualification: flatness 0 ... clean it by water and cleanser such as soap water2.deal with scratchKeep the crystallized glass flooring clean all the time ... . If waxed, crystallized glass stone can glossing like new. 3.deal with special infectants Infected by below infectants, you can wipe ...