... weldingseam,energy saving. CT 520 DC Inverter MMA/TG/CUT welder DC machine description:1.Advanced inverter technology,small size and light ... weight, easy to carry2.Creative, effective and low costThree functions in one machine,TIG welding, MMA welding and ... use5.“D”series are for 110/220 double voltage input,automatic input voltage changing6.CE APPROVED,OEM ACCEPT,DIGITAL DESIGN ACCEPT ...