... 1900*190*15/4mm 2.Oak top layer,3 layers,AB&CD grade 3.Poplar bottom&core,brushed,stained,oiled oak ... three layers solid engineered laminate flooring YS-1Specification: MaterialOak top ... coating (European standard),7 layers for base and 2 layers for surface. Among these 9 layers coating,3 layers include aluminium oxide.UnfinishedNaturalNo ...