Preparation of concrete formwork Length: (mm) 970/1000/1500/1970/2000/2500/3000 Width: (mm) 500 Thickness: (mm) 21, 27 Tolerance on length / width: (mm) +/-3 (mm) +/-0.5 Number of plies: (plies) 3 Surface: Hot pressed melamine resin Processing of edges: By waterproof paint Wood basis: Chinese Fir Formaldehyde emission class: E2 Glue:Melamine Moisture content: (%) 8-10