• +34 944 356 611
  • adimde@adimde.es



    Hotel Naval - La Naval, 3, 48910 Sestao, Bizkaia

    94 495 60 55
    Service provider
    General info

    Established in January 1994, Mantenimientos, Ayuda a la Explotación y Servicios, S.A. (MAESSA) has at its disposal a skilled workforce, material resources, and management systems which have been developed since its activity in 1972, AUXINI, S.A. MAESSA has been part of ACS Group since 1996. ACS Group is the first Industrial Corporation in Spain; it has a multidisciplinary workforce in continuous training and is involved in practically all of the segments related to industry, real estate and infrastructure. MAESSA's implementation throughout the national territory gives them excellent coverage throughout the autonomous communities and allows them to choose, obtain, and develop contracts of all size volumes.


    The MAESSA group, which includes national affiliates MAETEL and MONTRASA MAESSA ASTURIAS, and the international affiliates MAESSA France, MAESUR (Uruguay), MAESVE (Venezuela) and TESCA (Ecuador) offer our clients solvent, agile, flexible and innovative management solutions. MAESSA provides special attention to the safety and health of its employees and also provides particular attention to the defense and protection of the environment; As well as the implementation of protocols and procedures in accordance with sustainable development.

    Main Product Lines

    Industrial Assembly
    Naval Construction
    Gas and Water
    Renewable Energies
    Electrical Distribution and Substations
    Telecontrol and Instrumentation


    At MAESSA, we believe in working with the most up to date and flexible management techniques, while at the same time adapting to the needs of our clients. This allows us the capacity to work with contracts of all sizes.


    Association of Maritime Industries of the Basque Country

    Buenos Aires 2, 1º Izq
    48001 Bilbao (Bizkaia)
    Tel: +34 944356610
    Fax: (+34) 944356611
    Móvil: +34 619465937
    email: adimde@adimde.es