Resistance Welding Controls, llc, (RWC,llc) partnered with Safco Systems, srl of Milan Italy in 2014 to distribute their welding controls in North America. Safco Systems has a long history starting in 1962 designing and building spot welding controls for single pase AC welders. In 1983, we introduced a new microprocessor platform to take advantage of SCR technology in both single pase and three pase Welding Transformers.