SPX Corporation is a leading supplier of infrastructure equipment including HVAC products and detection and measurement technology. SPX currently has operations in over 20 countries across the globe, providing reliable and efficient technology for the power and energy markets. SPX was founded in 1921 under the name of the Piston Ring Company, and in the years since has grown to become a Fortune 500 organization. SPX Corporation’s headquarters are located in Charlotte, North Carolina, USA.