... 2D barcode. Tech Parameters HMD-50A Diode Laser Marking Machine Output Power50W(adjustable)total Power Consumption ≤1.8kWMarking ... rings, engine tag, car panel buttons,spare parts of machine tool; Electronic communications industry: the phone keypad, keyboard, ... belt buckle, gold and silver ornaments, signs; Wood industry: wooden crafts, calligraphy copy and Picture mounting, furniture decoration, et ...