manufacturing establishments, which produce a total of more than $29 billion worth of goods annually. The automotive industry is Tennessee's largest manufacturing sector and one of the nation's largest. Nissan's assembly plant in Smyrna is the largest automotive assembly plant in North America. Two other automakers have assembly plants in Tennessee: General Motors in Spring Hill and Volkswagen in Chattanooga. Ford is constructing an assembly plant in Stanton that is expected to be operational in 2025. In addition, the state contains more than 900 automotive suppliers. Nissan and Mitsubishi Motors have their North American corporate headquarters in Franklin. The state is also one of the top producers of food and drink products, its second-largest manufacturing sector. A number of well-known brands originated in Tennessee, and even more are produced there. Tennessee also ranks as one of the largest producers of chemicals. Chemical products manufactured in Tennessee include industrial chemicals, paints, pharmaceuticals, plastic resins, and soaps and hygiene products. Additional important products manufactured in Tennessee include fabricated metal products, electrical equipment, consumer electronics and electrical appliances, and nonelectrical machinery. Business Tennessee's commercial sector is dominated by a wide variety of companies, but its largest service industries include health care, transportation, music and entertainment, banking, and finance. Large corporations with headquarters in Tennessee include FedEx, AutoZone, International Paper, and First Horizon Corporation, all based in Memphis; Pilot Corporation and Regal Entertainment Group in Knoxville; Hospital Corporation of America based in Nashville; Unum in Chattanooga; Acadia Senior Living and Community Health Systems in Franklin; Dollar General in Goodlettsville, and LifePoint Health, Tractor Supply Company, and Delek US in Brentwood. Since the 1990s, the geographical area between Oak Ridge and Knoxville has been known as the Tennessee Technology Corridor, with more than 500 high-tech firms in the region. The research and development industry in Tennessee is also one of the largest employment sectors, mainly due to the prominence of Oak Ridge National Laboratory (ORNL) and the Y-12 National Security Complex in the city of Oak Ridge. ORNL conducts scientific research in materials science, nuclear physics, energy, high-performance computing, systems biology, and national security, and is the largest national laboratory in the Department of Energy (DOE) system by size. The technology sector is also a rapidly growing industry in Middle Tennessee, particularly in the Nashville metropolitan area. Energy and mineral production Tennessee's electric utilities are regulated monopolies, as in many other states. The Tennessee Valley