... Marking Depth:0.1-1.0mm Pneumatic Marking Machine for Metal Parts are details as follow:Brief Description:Jinan Hengwei Technology ... symbols.Application : Suitable for steel, copper, iron , aluminum ,alloy , plastic and other metal and non-metal parts of the flat ... numbers. Feature:1, one can use the computer parts, notebook, desktop control, suitable for mobile office. 2, using hand-held electric ...