... 2,MMA/MIG VRD 3,Suits all materials 4,Chopper Multi-purpose welding, welding converter 1Multi-operator,can converter big DC power ... source to several small ones2,Multi-protectionHot start and VRD function,with good arc-starting3 ... ,Multi-application.suitable for all kinds of welding material4,Multi-process,After connecting with any DC ...