... -15%Density: 680-740Kg/CBMGrade: OSB/1, OSB/2, OSB/3, OSB/4, (OSB1, OSB2, OSB3, OSB4 );Thickness: 6mm/8mm/9mm ... leading brand for CHINESE BUILDING MATERIAL products. CE certificated OSB 3/OSB-3/OSB panel/OSB board,1220*2440mm/1250*2500mm OSB board