... for mainly components. 3.Newest design, §.FEATURE1.Multifunction, AC/DC MMA, pulsed argon arc welding, cost-saving.2.Control over the ... alumium welding.7.Two inverters lay in left and right, high reliability, easily maintain.8.Over-heat, over-current, under ... %Efficiency(%)85Power factor0.93Protection classIP21SInsulation classF COMPANY VIEW: WSME INVERTER AC/DC SQUARE WAVE IMPULSE WELDING MACHINE