... TIG/MMA Inverter Welding Machine 2.Unique apperance 3.Powerful function 4.Environment protection 5.Energy saving system TIG/MMA Inverter Welding Machine Functions and Features: 1) Welding Manner:DC TIG,Electrode welding ... steel,copper,titanium alloy. 4) Excellent Inverter Technology:Inventer frequency up to 100KHZ, ... cost effective. 5) Precise Control System:Pulse Width Modulator(PWM),with closed-loop ...