Blockboard Size:1220x2440 Face/ Back Bintangor , oak,okoume, pine, pecial ceder Core :Poplar, hardwood, birch, pine 1. Blockboard Feature:1) High bending strength ... or as requiredFace/Backintangor , oak,okoume, pine, pecial ceder or as requriedCorePoplar, hardwood, birch, pine or as requiredGradeBB/CC, CC/DD, BB ...