1Multi-operator,can converter big DC power source to several small ones 2,MMA/MIG VRD 3, ... material multi-operator welding converter 1Multi-operator,can converter big DC power source to several small ones2,Multi-protectionHot start and VRD ... kinds of welding material4,Multi-process,After connecting with any DC power source whose open circuit voltage is 65v-110v, it can ...