... ,E2 4.High density hardboard My company is a professional supplier for Hardboard(smooth surface and rough back). Hardboard is widely ... America,Asia,Northeast Asia,Africa,ect.15.Usageindoor16.Qualitynormal hardboard,glue added hardboard17.Face/Backface plain, back rough ... 2440,ECT.2)Thickness:2.3mm---5mm 3)Quality:normal hardboard,glue added hardboard 4)Glue:E1,E2 Packaging & DeliveryPackaging Detail ...