... 60mm glue: MR, E1, E2, carb core: poplar, pine,paulownia, hardwood face/back: veneer, hpl Blockboard (lumber core)1. Size ... 60mm3. Garade: BB/CC grade4. Core Material: poplar, pine, hardwood, paulownia, falcatta5. Face/Back Material: veneer, HPL, sandwich6. Veneer species: okoume ... . Hpl species: 0.5mm to 0.8mm hpl laminate8. Sandwich panle: blockboard core, mdf face/back , mdf+blockboard+mdf, melamine ...