1) Adopting IGBT inverter technology and advanced control circuit 2) Excellent quiet and active character 3) Easy arc starting and stable welding 4) Have the function of automatic no load power saving 5) According to working requirement, set the selecting switch for long /short welding cable 6) Set a function of current replacement for easy operation 7) Have fine protecting functions, including over current, overheating and under voltage 8) Applied to many kinds of welding rods including acid, alkali and fibrous