... .1.Standard hardboardSizes:1000*2000,1220*1830,1220*2440Normal thickness:2.0mm,2.3mm,2.5mm,2.7mm,3.0mm,3.2mm.Length:1800 to 2500 ... 5.0mm.Advantage:non-formaldehyde.2.Cement hardboardSizes:1000*2000,1220*1830,1220*2440Normal thickness:2.0mm,2.3mm,2.5mm,2.7mm,3.0mm,3.2mm ... .3.Embossment hardboardSizes:1000*2000,1220*1830,1220*2440Normal thickness:2.0mm,2.3mm,2.5mm,2.7mm,3.0mm,3.2mm.Length:1800 to 2500 ...