High frequency repetitive marking is the advantage of RFH solid-state UV lasers The unique function of self-cleaning in the inner cavity makes the RFH UV laser have a longer life and more stable     As long as lasers are mentioned, everyone may think of the same thing. It seems that all lasers have the same origin, but in fact they are different, including but not limited to CO2 lasers, red light, green light, and today's protagonist ultraviolet laser.