Welding Machine, Inverter Portable Welder, Welding Equipment manufacturer / supplier in China, offering Inverter DC Arc Welding Machine Zx7-300, Inverter DC Arc Welding Machine Zx7-315g, Inverter DC Arc Welding Machine Zx7-250 and so on.
It is the last photo.
You have seen all photos.
This is at workshop of assembling. It is the area of half-finished product. It only need a assembling the case, test welding and then packed.