Founded in 1998, Steven Douglas Corp. designs, engineers, and builds custom automation machines for manufacturers from its headquarters in Concord, Ohio. SDC handles projects in-house from engineering and assembly through testing, installation, and ongoing support, with particular depth in micron-level automation and specialized systems such as automated wire-harness equipment. The company has built more than 1,500 machines and operates a 69,000-square-foot temperature-controlled facility alongside a 16,000-square-foot engineering office.