SHF-66KA Small Wires Spot Welder can also be enameled wire welder welding metal wire, metal belt, metal sheets, can be used in the manufacture of solar cells can also be used in printed circuit board repair welding.Welding output single / double pulse selectable, single-pulse output will help improve the welding speed, dual-pulse output will help improve the welding quality.Optional output pulse welding or constant current constant voltage control mode.