One unit, dual function Welding and power supply at the same time. Supper welding With Koop strong air-cooled 4-stroke diesel engine, provides supper welding current. High conversion efficiency 100% copper alternator, class F insulation, high conversion efficiency, smart AVR controller ensures stable voltage and less voltage waveform distortion Safe and low fuel consumption With new tip-clearance fuel pump and bottom inertia injection technology, security is better than that of gasoline. Portable design New design of frame, compact structure, four strong wheels, easy to move.