Plywood For Concrete Formwork: Core: poplar/ birch/ pine core/ birch face and back poplar core/ poplar with birch Layer:9~13 layers Glue:MR/WBP PSF: Black, Brown, Dynea, 120~240g/m2 Grade: Smooth Specification: 915mmX1830mm, thickness 9~27mm 1220mmX2440mm, thickness 9~27mm 1250mmX2500mm, thickness 9~27mm