no asbestos; no formaldehyde; best fireproof; best water resistance MgO board/ Magnesium Oxide Boardsmain material: MgO, MgCl2, non-woven fabrics, fiber glass, sawdust , perlite THICKNESS3-12mm, usual thickness:5mm,8mm,10mm,12mmDIMENSIONS1200mm X 2400mmCOLORwhite/gray Density0.95g/cm³Bending strength19.5MPaTypical moisture content6%Drying shrinkage0.26%Moisture movement0.50%Impact strength6.2KJ/m ...