... 20,21,25,30mm core:poplar,fir,paulownia,hardwood. f/b:okoume,bintangor,birch,pine Detailed Product ... Specifications of Blockboard,furniture board,plywood : 1) Face and back: okoume, poplar, birch,bintangor,2) Core: poplar, pine, hardwood, paulownia other3 ... 18mm, 25mmblockboard,laminated wood board,hipboard,joineryface&back:okoume,bintangor,agathis,birch ,poplarcore:paulownia,firglue:MR,E2,E1 ...