Laser marking technology is one of the largest application areas of the exciting bai light processing du. laser marking is the use of high energy density laser local irradiation of zhi workpiece, so that to the surface of the material vaporization or color change chemical reaction, thereby leaving a permanent mark marking method. Laser marking can play out a variety of text, symbols and patterns, etc., the character size can be from millimeters to microns order of magnitude, which has a special significance for the anti-counterfeiting products!