2. the ability to network  compensation, the supply voltage, current wave soldering, stable and reliable. 3. and unloaded and small, traditional welding machine than 80%. 4.  but to save power, disobedient 100khz high rate of, dynamic, in response to an electric arc stability and the arc, low noise, fusing the deep, high strength. 5 and good thrust and a sticky, apply to all kinds of steel.