specification:GFW-G190B 1. Advantage design 2. Easier arc starting, 3.Stable electric arc. Product description:GFW190/200 are new type of removable electric welding machine, which are our company's new products. We combine both overseas and domestic technology, then create our own technology.1. Advantage design, Easier arc starting, Stable electric arc.2. DC output, Large scope of application, ...