... MR Glue,1220x2440mm 2) poplar or composition core 3) for concrete construction uses, with smooth surface veneer. Plywood at size 4ft* ... & Back, Bintangore Face & Back, Mahogany Face & Back, Poplar Core Multi-plywood. Thickness: 2.5mm, 3mm, 3.5mm, 4mm, ... composition core 3) for concrete construction uses, with smooth surface veneer.4) Special waterproof resin can extend the working life of concrete 6) ...