... Newest design, §.FEATURE1.Multifunction, AC/DC MMA, pulsed argon arc welding, cost-saving.2.Control over the zero, lower noise of ... 5.With the function of 2T/4T repeated conversion, easily welding, improve the efficiency.6.Super-clean-up pulse width ... factor60%Efficiency(%)85Power factor0.93Protection classIP21SInsulation classF COMPANY VIEW: WSME INVERTER AC/DC SQUARE WAVE IMPULSE WELDING MACHINE