... Hospitals, Hotels, Schools, Offices, Subways, and LaboratoriesStandard Size: 1220mm*2440mm / 4'*8'Thickness: 3mm to 18mmSurface Hardness: 3H. PROPERTIES: (Item)(Unit ... )(Result)(Standard)(Density)g/cm31.61.4<D<=1.7(Weathering Test) 43<=W<=5(Flexural Strength) (Dry ...