... , OSB/4, (OSB1, OSB2, OSB3, OSB4 );Thickness: 6mm/8mm/9mm/10mm/11mm/12mm/15mm/18mm/21mm, 22mm, 25mm, ...30mmSize: 1220x2440mm, 1250x2500mm ... .It has many advantages such as:1) Tight construction and high strength2) Minimum twisting, delamination or warping3) No rotten or decay ... export. CONSMOS-The leading brand for CHINESE BUILDING MATERIAL products. high quality osb board/oriented strand board