SPX Corporation is a supplier of highly engineered products and technologies, holding leadership positions in the HVAC, detection and measurement, and engineered solutions markets. Based in Charlotte, North Carolina, SPX Corporation had approximately $1.5 billion in annual revenue in 2020 and more than 4,500 employees in 17 countries. The company's products and technologies serve customers in a wide range of industries, including food and beverage, power and energy, and transportation. SPX Corporation was founded in 1912 as the Piston Ring Company and has since grown through a series of acquisitions and divestitures to become a diversified industrial company with a global presence.