... carb core: poplar, pine,paulownia, hardwood face/back: veneer, hpl Blockboard (lumber core)1. Size:1220X 2440mm, 1210x2150, 1250x2500, ... 1000x20002. Thickness:15,16,18,21, 25, 30, 38, 40, 44, 48, 60mm3. Garade: BB/CC grade4. Core Material: ... poplar, pine, hardwood, paulownia, falcatta5. Face/Back Material: veneer, HPL, sandwich6. Veneer species: okoume, birch, bintangor, pine, maranti, oak, ...