Looking back suddenly, here is the most appropriate Blockboard (1). Face/Back: Okume, Birch, Meranti etc.(2). The grade of face/back: B/B grade, BB/BB grade , BB/CC grade(3). Core: Paulownia,Pine or Poplar(4). The grade of the core: A grade, B grade(5). Glue: MR glue, E1 glue, E2 glue(6). Size: 1220X2440mm(7).Thickness: 14mm-25mm(8).Packing: Standard seaworthy packing.