The device is mainly used for welding carbon steel, stainless steel, copper and copper alloys, aluminum and aluminum alloy, with the required strength and microstructure. Features: 1. New design, compact structure, reliable 2. Charging voltage range, easy to adjust the parameters 3. Torch adjustable buffer down to reduce the splash and improve welding reliability 4. Welding torch for the dual-use, easy to use 5 Internal components scientific and rational layout, high thermal efficiency, long working hours