... Energy saving system Functions and Features: 1) Welding Manner:DC TIG,Electrode welding. 2) Scope of Application:Widely used in ... steel and Cr-Mo steel,copper,titanium alloy. 4) Excellent Inverter Technology:Inventer frequency up to 100KHZ,and conversion efficiency to ... ,durable,reliable and cost effective. 5) Precise Control System:Pulse Width Modulator(PWM),with closed-loop control system ensure the ...