... back : B/B B/C/ C/D 2) core:poplar birch 3) glue:E0 , E1 , E2 . 4) size:1220x2440x6-24mm ... IS9001 ISO140012, Face and back : birch , okoume , bintangor , meranti , keruing , pine , poplar other red and white hardwood vwneers 3, Core: poplar,combi ... . 5.No ratten or decay 6.Low formaldehyde emission All White birch furniture plywood