UV Laser marking machine is known for its high absorption rate. Ultraviolet (UV) laser offers extremely high photon energy, which can be used in a wide range of applications that visible and infrared laser sources can’t. The wavelength of UV laser is reduced to 532 nm by passing the standard wavelength laser (1064 nm) through the first non-linear crystal. And then further passed through the second crystal, reducing its wavelength to 355 nm. Therefore, UV laser machine can get flawless results on certain metals, plastics, glass, ceramic circuit boards, and a variety of other heat-sensitive materials.