SPX Corporation is a Fortune 500 multi-industry manufacturing firm. SPX's business segments serve developing and emerging end markets, such as global infrastructure, process equipment, and diagnostic tool industries. With corporate headquarters in Charlotte, North Carolina, they have operations in more than 35 countries around the world. Their products include pumps, valves, and other fluid handling devices; diagnostic tools, fare-collection, and cable/pipe locators; cooling, heating, and ventilation equipment; and compactors, power systems, broadcast antenna systems, dairy dryers, aerospace components, and pressure vessel closures.  Wikipedia