... 2 esay to marking 3electro-magnet marking machine 4 metal engraving machine 5pin marking machine This kind of marking machines,with electromagnet, ... work through long cable wire far away from computer and control machine, and directly mark on the body, base plate ... date,name,brand,etc on body,framework,base plate,pillar,engine,and other big ,heavy materials.Major partsMain machine, pneumatic marking ...