... can chose) 3:Marking Depth:0.1-1.0mm Pneumatic Marking Machine for Metal Parts are details as follow:Brief Description:Jinan ... Machine, The machine is in succession of constant Hengwei intelligent pneumatic mark machine, on the basis of original merit in the ... mark and different modification work of mark symbols.Application : Suitable for steel, copper, iron , aluminum ,alloy , plastic and other metal ...