The wavelength of LD-MK-G3005 Green Laser Subsurface Engraving & Flying Surface Marking Machine is 532nm green laser. After focus, it has the smaller focus, become more powerful, higher conversion of the electron & laser. This machine is more suitable for the subsurface or surface of glass engraving(such as: hard drink glass bottle, mobile key press, cell phone screen, LCD screen, optical components, optical lenses, car glass… etc).At the same time applied to the most of metal and nonmetal materials, processing surface lining or engraving on glass, crystal, and coating film marking process, as: deep processing of Solar photovoltaic cells glass, etc.