block board for packing or constructions Bloackboard for packing:Face/back: birch,poplar,bintangor,okoume,pine,red meranti or according to your ask Grade:BB/CC ,DBB/CC Core:poplar Size:1220X2440 Thickness;12mm-25mm Glue:MR WBP If interested in our products and have any query on plywood, please do not hesitate to contact me at any times.