3W5W laser for engraving LOGO pattern on glass has little thermal effect 3W5W nanosecond ultraviolet laser gives the glass higher artistic value   Carrying out UV laser engraving on the water cup is an artistic pursuit as well as an enjoyment of life.   The UV marking process is realized by using the photochemical reaction between UV light and the material to cause the color to change. Using appropriate parameters can avoid the obvious removal effect on the surface of the material, and thus can mark graphics and characters without obvious touch.