Features: 1) With optional different types of spot guns or tool packages different function can be realized: a) One side / double sides spot welding, screws / rivets spot welding and refinishing and more b) Continuous accurate parameters adjustable, such as electricity time, welding current 2) Main circuit switch durable and reliable, out put current stable 3) Welding / adjust switch, convenient for spot gun fist positioning 4) Strong current, short pulse working manner, simulating capacitor storage welding result 5) Can be connected to STUDDER kit, manual spot gun 6) Continuous single spot welding and pulse single spot welding to high spot metal heet spots distributed averagely 7) Microprocessor digital control technology, full digital IC, synergetic control panel brings you the best working situation 8) Movable power supply and finished pneumatic spot gun, enable users to change operation bay as required