... -noise ,easy installation ,anti-earthquake etc. 1) dimensions of Aluminum Composite Panela) thickness:3mm,4mmb) width:1220mmc) length:2440mm,3050mm,3200mm ... .5mm 3)features 1) light weight,flat surface and high strength2) excellent heat insulation,sound insulation,fire-resistance,acid ... tooths,vehicle bodies,yachts,industrial usage etc. 3mm Aluminum composite panel use for engraving