Agustín Maria Franco Macías

Teléfonos de México SAB de CV is a telecommunications company. It is engaged in owning and operating a fixed-line telecommunications system, offering connectivity, Internet access, co-location, hosting and interconnection services. The company was founded on December 23, 1920 and is headquartered in Mexico City, Mexico.

Carso Infraestructura y Construcciones SA de CV provides engineering and construction services. The firm designs and builds oil and gas pipeline installations, power generation facilities, telecommunications infrastructure, residential buildings, office spaces, industrial complexes, commercial centers and road works, including tunnels, bridges and highways. It also fabricates and assembles equipment and ancillary structures for oil rigs and drilling platforms. The company was founded in 1999 and is headquartered in Mexico City, Mexico.

Infra SA de CV produces and supplies industrial gases. It offers industrial gases, special gases, welding gases mixtures, material supply for welding, welding and plasma cutting and welding and flame cutting equipment. The company was founded by Alfonso and Fernando Franco in 1915, and is headquartered in Naucalpan de Juárez, Mexico.