Waterproof Laminate flooring, Unilin Click system, AC2,AC3,AC4,AC5 6mm,7mm,8mm,10mm,12mm ... : Brown core or Green core HDF,(3)Click system:Unilin click,Arc click,Single click,Double click.(4)thickness:6mm,7mm,8mm,10mm,12mm(5 ... ,AC3,AC4,AC5 are avalible(7)ISO9001,ISO14001,CE certificate V-groove crystal surface laminate flooring