1.Small volume,light weight,machine and welding gun both can move conveniently,adopt 2meters length water-cooling welding cable and hand-held welding gun,the operation is quite flexible,convenient,able to weld inner parts and special parts of workpiece; 2.Can weld many metal and alloy like low carbon steel,weldable steel,stainless steel,iron, copper sheet etc.,welding thickness range is 0.3-3.5mm; 3.Widely used in steel furniture,stainless steel product,security door manufacturing and steel wire mesh reweld for leakage welding etc.