... core 2) Wearing, crack and alkaline resistant film faced plywood,brown,black,construction plywood1) WBP glue, poplar, birch or composition core ... resin can extend the usage life of concrete 5) Foreign brown and black film or local film 6) Environmentally friendly, lowest ... 2, 500mm) x (12, 15, 18, 20 or 21)mm Brown film faced plywood