... -cadmium, button battery spot welder spot welding machine Multi-pulse precision spot welding machine Lithium-ion,Ni-MH, nickel-cadmium ... sheet metal, all kinds of metal weldingspot welding machineMulti-pulse precision spot welding machineFeature:1, Performance characteristicsUP-23 is use ... changes and transfer at random. To use the dual-pulse can ensure welding film and solder joint beauty. 7 segments ...