... for marking letters & logo on metal parts. Automatic One Dot Marking MachineBasic principlesComputer controls marking-needle to move on traces ... ., graphics, VIN code, time, date, barcode reading marking, ticket, dot matrix, 2D code(two-dimension code), circumferential parts marking and ... two marking pins, RS-232 and USB data line, 19 core cable, power line, software CD Return and feedbackI. As we do ...