Construcciones y Auxiliar de Ferrocarriles, S.A. designs, manufactures, maintains, and supplies equipment and components for rail systems worldwide. It offers rolling stock products for high speed trains, regional trains, commuter trains, metros, lrvs and tram-trains, trams and light metros, and locomotives. The company also provides equipment and components, such as wheel sets, wheels, axles, gear units, and couplers, as well as after-sales services, including technological advice and inspection guidelines; traction systems and converters, energy storage systems, and control and communication systems; and European rail traffic management systems, electronic interlocking products, and integrated control centers. It is also involved in the provision of maintenance, and refurbishment and upgrading services; workshop equipment and auxiliary vehicles; and vehicle after-sales services, as well as turnkey management of materials. In addition, it develops turnkey solutions that cover a range of activities, such as viability studies, civil works, electrification and signaling, maintenance, and the operation of the system. The company was formerly known as Compañía Auxiliar de Ferrocarriles S.A. and changed its name to Construcciones y Auxiliar de Ferrocarriles, S.A. in 1971. Construcciones y Auxiliar de Ferrocarriles, S.A. was incorporated in 1917 and is based in Beasain, Spain.