1, Mosfet technology 2, Small size, light weight 3,High duty cycle, High working effciency 4, Excellent welding performance *PWM controling technology taken, stable welding current,accurate electric current controling.*Strong adaptability with high duty cycle,Light weight, compact structure, easy to carry.*Adaptable to welding stainless steel, carbon steel, alloy steel and titanium.ect material.* ...