... devices, implementation of " AC-DC -AC - DC " transform ; the machine use no source power factor correction, power factor high, welding process characteristics excellent, ... Mig Series inverter pulsemig/magarc welding machinewithpulse,constantpressurethesetwo welding ways, In addition there has thehandarc,TIG,carbon- arcgougingthreekinds ofweldingmethods. Pulseweldingmethodcanachievecarbonsteel, ...