Ultraviolet solid-state laser engraving and marking plastics transmit light, with clear graphic details   With the evolution of the design concepts of various digital products, there are many places that need to be backlit. The most common ones are backlit keyboards, backlit keys and some small indicator lights. With such a subtle design change, the experience of a variety of products has undergone qualitative changes. To achieve this function, it is inseparable from the credit of the laser marking machine.