... 1.marking on the flat surface 2.metal marking machine 3.pin marking machine 4.marking on the mechanical part Marking Surface: ... with flatness not exceeding 3mmApplicable Scope: Motor part, Mechanical part, Machine tool, Hardware product, Valve, Pump valve, Electro-mechanical equipment ... Computer controls marking-pin to move on the traces of pre-edited letters, numbers, codes and graphs, meanwhile, to ...