SunSource (also known as STS Operating) is a company specializing in industrial and mobile fluid power distribution. It provides motors, cylinders, mobile electronics, pumps, valves, bag filters, oil ait systems, and other products, as well as services such as repair, application design, fabrication, hose kitting, and assembly. The company caters to construction, transportation, oil and gas, mining, forestry, food and beverages, mobile machinery, and other sectors.