... 4: CE XG3-C marking machine , no PC required- a stylus pin dotting on the surface with high frequency and marking ... logo .It could mark characters , letters , series NO , graphes ect on metal workpiece .detail information , link to our website directly ... of logo (characters , Alphanumeric , date, numbers , serial NO, VIN codes, graph ,ect) on any metal or hard plastic material.support plane ...