High cost-effectiveness, dual purpose, AC power generation, DC welding, and can also be used as a separate generator or welding machine. Digital frequency conversion, voltage stabilization and fuel saving, solves the problem of voltage instability during use, and prolongs the machine's lifespan. All copper wire large motor with sufficient power and durability. Small size, low power consumption, low heat generation, mobile and portable design. Easy to operate, AC power generation/DC welding can switch the current size automatically with one click, and the digital display control is clear at a glance.