Walnut engineered flooring:top veneer 0.6mm,2mm,3mm,4mm,etc. Specification:910* ... -127*8-15mm( as customer's request) Structure:multi-layer engineered floorTop layer: 0.6mm,2mm,3mm,4mm,etc.Specification:910 ... plywood making , making groove/tenon and Click syste WALNUT wood flooring