plywood Size: 1220 x 2440, 1250 x 2500mm Thickness:2.5-30mm Core: poplar, birch, hardwood and so on Glue: MR, E1, E2, Melamine Grade: packing use Flattening and smooth in surface Warp allowed:≤1%, Thickness allowed: ± 0.5 Flexibility: 5000-7948 mPa Surface strength: 24-75.8 mP