... .5" LCD Touch Screen Marking Machine (set include: marking machine, 3.5" LCDcontroller, 2 marking pins) CNC Automatic 3.5" LCD Touch ... of motorcycle, car frame ,automotive chassis, engine, mechanical part, machine tool, metal pipe, gear, pump body, valve, various hardness plastic ... required.Free training installation and operation for the staffs. CNC Automatic 3.5" LCD Touch Screen Marking Machine