JQ-50 metal logo engraver jewelry metal marking portable laser marking high speed up to 7000mm/s easy ... number, date, bar code, etc.Metal logo laser marking machineYAG laser markerlaser engraver on salelaser marking machine3. Product Parameters ModelJQ ... Electronics industry, communication, electrical equipment, clock and watch, glass, jewelry, dress and personal adornment, etc.5. SamplePlease don't ...