... lacquer, Aluminum Oxide E0, E1 grade Black Walnut Engineered Hardwood Flooring Species: Oak, Elm, Merbau, Teak, Cumara ... 6-4mmGrade: AB, ABC, CD, etc.Core Layer: Hardwood plywood, HDF, etc.Bottom Layer: Beech, Cork, ... Content: 8-10%Formaldehyde Emission: E1, E0Installation: Floating, Glue downWarranty: 15 years warranty for residential useMOQ: ... less than 500M2) Black Walnut Engineered Hardwood Flooring