... number automatically.Applycation: Suitable for local large machine and immovable machine.1.marking the serial number,name,trademark,prduction ... equipment, product.4, Marking on all kinds of machinery parts, machine tools, hardware, metal pipes, gear, pump, valves, fasteners ... :Machine weight:<20KG(Including Electromagnet)Shock resistance:0-25KGHumidity:0-90%(Non-Condensed)Depth:0-0.8mmMarking formation: ...