Constructora del Sureste is a large energy & installations company based in Villahermosa, Tabasco, active since 1981. It also works in civil works.
CICSA (Grupo Carso) is a large civil works company based in Ciudad de México, Mexico City, active since 1980. It also works in energy & installations, commercial construction.
Constructora Peninsular Campeche is a mid-size energy & installations company based in Campeche, Campeche, active since 1995. It also works in civil works.
Constructora Peninsular del Golfo is a large civil works company based in Veracruz, Veracruz, active since 1979. It also works in energy & installations.