plywood: face/back:Okoume,Poplar,Bintangor,Pine,Birch core:Poplar,hardwood,poplar and hardwood mixed grade:BB/ ... /CC,CC/DD face and backokume,popar,bintangor,pine,birch,etccore:poplar,hardwood,harwood,pine,birch or as requsetgrade:BB/BB,BB ... or construction package or industryminimum:1×20GP supply high quality pine plywood