Face and back: Maple, Walnut, oak, Sapelli, teak, cherry, etc. Core: poplar, hardwood Glue: MR formaldehyde release grade: E2, E1 Grade: AAA, AA Size: 1220x2440mm Thickness: 3-18mm Density: about 500-650Kg/CBM Moisture: 6-14% Bonding strength:>0.7Mpa