3W uv laser for fast charger power supply adapter USB cable The UV solid-state laser marking Phone Chargers & Cables shell developed and produced by RFH can be clean, smooth and free of traces, and the text and graphics formed by the marking are complete and clear, which can highlight its brand and quality to a greater extent. RFH UV lasers have three distinctive features: fast speed, high precision, and high stability. This type of laser etching technology cannot even be compared with fiber lasers.