Has been certified with Utility Model Patent in Advanced Imported IGBT Inverter technology, high efficiency, energy saving environmental protection. Super strong ability of the anti-fluctuating of power supply voltage. Under 110-280V, the welding power source will have an output current and can weld. Suitable for stable welding with extended cables up to 150 meters. With a five-proof design, it ensures working stability and reliable when kinds of harsh welding circumstances. With level water-resistant design, the machine can be fully dipped into the water under switch-off conditions. Using PWM control technology and constant current output control, welding current can be exactly controlled. With an auto protection function to prevent over-current and over-heating, it makes the machine safe and reliable. Applicable to acidic, alkaline, high-strength electrode.