... , 2 marking pins) CNC Automatic 3.5" LCD Touch Screen Marking MachineBasic principlesComputer controls marking-needle to move on ... and graphs. Major functionsSoftware applicable on 3.5" LCD touch screen controller, has strong editing functions, without extra PC ... Samples Major partsDesk top marking machine, 3.5" LCD touch screen controller marking controller SparesAir pressure valve, two marking pins ...