... machine.1.marking the serial number,name,trademark,prduction date on the engines, pistons, body, frame, chassis, connecting rod ... cylinder and other parts of automobile,motorbikes and so on.2,mark on the chassis of electric cars, bicycles, motorcycles and ... gear, pump, valves, fasteners, steel, instruments.5.Marking on electrical and mechanical equipment and other metal.Also plastic productionTechnical ...