... with First-Class in China.1.Standard hardboardSizes:1000*2000,1220*1830,1220*2440Normal thickness:2.0mm,2.3mm,2.5mm,2.7mm ... 5.0mm.Advantage:non-formaldehyde.2.Cement hardboardSizes:1000*2000,1220*1830,1220*2440Normal thickness:2.0mm,2.3mm,2.5mm,2.7mm ... formaldehyde<1mg/100g;better strength.waterproof3.Embossment hardboardSizes:1000*2000,1220*1830,1220*2440Normal thickness:2.0mm,2.3mm,2.5mm,2.7mm ...