our products of cements boards is 100% non asbestos. stand size : 915 x 1830mm, 1220 x 2440mm, 1200 x 2400mm. the thickness : from 3mm up to 18mm. density : 1300KG/M3+-10% anti-bend strength : >12MPA water-absorbing distortion: 0.1% below fire-reisistand grade : class A OTHER THICKNESS AND SIZE ALSO AVAILABLE ON REUREST. DETAIL: FIREPROOF, MOTHPROOF, NONTOXIC, NOT FORMALDEHYDE AND BENZENE, ANTI-RADIATION. any requirement, please do not hesitate to contact us.