welding machine ARC welder with advanced inverter technology,energy saving,stable and reliable welding current output, small ARC200 INVERTER WELDING MACHINE ... saving up to 50%5.inverter frequency up to 100KHZ, speedy dynamic response,easy to arc initiation,resistant to interference,stable arc,low welding ... kinds of ferrous metals such as low carbon steel, medium carbon steel and alloy steel etc.8.CE& ...