plywood Grade:BB/BB,BB/CC,CC/DD Glue:WBP,E1,E2 Core:poplar,pine,birch,hardboard plywood (environmentally ... to seven times more resistant to thickness swell than substitute wood-based panels. Plywood also returns to its original dimensions when it ... dries; 3) Stronger than substitute wood-based panels in the four important engineering strength properties of bending ...