The light transmittance of the focusing field lens is as high as 99%, and the laser beam is focused more finely. It has the characteristics of high precision, good focusing effect, strong spot, no deformation, and stable wavelength. The power supply adopts high-efficiency and energy-saving chips, with high quality, stable output, reliable operation, stable and winning, and can work in a continuous state. The brand laser is adopted, which has the characteristics of good beam quality, high electro-optical conversion rate, high integration, and has a service life of up to 100,000 hours, without any consumables, and overall maintenance-free.