... 2500mm Face/back: Okome, Bintangor, Birch,etc. CE& ISO certificate Product namepoplar blockboard Face and backOkoume, bintangor,keruing, poplar, birch,red oak,ash tree, polyster,pine ... ,pencil cedar, etc Corepine,poplar,fir,hardwood,imported red hardwood, paulownia, falcata, combi etc Thickness4MM,6MM,9MM,12MM,15MM,18MM,19MM ... No ratten or decay.5> Low formaldehyde emission. Good Quality Blockboard