1,Non-remote controller cable;Better mobility and fewer disconnection 2,Novel dust-prevent design;Widely used Separate electric and voltage control;Simply centralized 3,Adjustment system;Convenient for beginner and practiced hand 4,Unique flip-flop integrated circuit control system;Stable voltage;Little spatter;Easy shaped 5,Suitable for aluminum,copper,stainless steel and carbon steel welding 6,ZKRII-630 with carbon are gpigomg fimction