... composition core 3) for concrete construction uses, with smooth surfac Plywood at size 4ft*8ft(1220*2440mm) E2 GradeOkoume Face & ... Back, Bintangore Face & Back, Mahogany Face & Back, Poplar Core Multi-plywood. Thickness: 1.7mm,1.8mm,2.0mm,2.3mm,2 ... friendly, lowest formaldehyde.. okoume,birch,bintangor,pine,red hardwood,pencil cedar,meranti...core:poplar,hardwood,birch,pine,thickness:1.7mm-25mmsize ...