1. Pulse AC DC TIG welding, mix AC DC TIG welding, MMA welding. 2. Solf key and digital display 3. Store parameter 4. CCC, CE ... set welding parameter;2.Satisfied AC/DC TIG welding, pulse AC/DC TIG welding, mix AC/DC TIG welding, MMA welding, and so on;3.Suitable ... for welding of the stainless steel, copper, aluminium, carbon steel and titanium ...