Laser, as a novel light source, possesses characteristics such as high coherence, monochromaticity, intensity, and directionality. In recent years, laser precision processing has found increasing applications in industries such as new energy, information technology, biomedicine, new materials, and electronics. Processes including cutting, marking, welding, drilling, engraving, ablation, 3D printing, annealing, and cleaning all require the use of laser technology. MEAN WELL's 3+N system power supply, suitable for serving as the main AC-DC power supply for various laser applications including CO2 lasers, fiber lasers, and diode lasers, meets the driving source requirements necessary for laser industry applications. These often entail high-speed PWM switching, fast response speed, high efficiency, low ripple, and multiple control functions. To meet the diversified demands of laser driving sources, MEAN WELL offers a variety of three-phase, three-wire high-power power supplies, including the RST and SHP series, providing customers with comprehensive solutions for system power supply to meet the power requirements of diode laser applications.