CYMI and MASA are two companies of Grupo ACS, providing services in the INDUSTRIAL AREA which operate under a single management – CYMIMASA – to render its services in the spectrum of electrical and instrumentation installations, industrial assembly, mechanical assembly, and maintenance of industrial plants, energy generation plants, renewable energies, infrastructures and special buildings.


CYMI-MASA was launched in 1962 and from the very beginning it has gradually extended its activities in a variety of sectors related to electrical and mechanical installations, instrumentation, equipment manufacturing, maintenance and concessions, until achieving the leading market position that it now enjoys.See more


To be a leading Company across the widest spectrum of the Energy, Oil & Gas, Pipeline Industrial, Operation and Maintenance, Infrastructures and Construction sectors, and to be trusted by our Customers.See more


To provide services, ensuring compliance with legal and Customer requirements, with highly qualified staff who promote effectiveness, efficiency and who strive each day to provide the utmost support and satisfaction when meeting the requirements of our Customers.See more


All of the company’s activities have a full focus on the customer, with spirit of service and as a guarantee for the future, building a strong, long-term relationship of trust, based on mutual knowledgeSee more

Key factors

Electric Energy Transport Concessions. Diversification of Products and Services. Consolidation and strengthening of its position on existing markets …See more

Human Resources

Attracting, retaining and motivating talented people. Promoting teamwork and quality control as tools to encourage excellence as a result of work well done….See more

Occupational risk prevention

The permanent objective of CYMI-MASA is to guarantee the health and safety of its employees, based on the implementation of a series of obligatory tools and preventative measures.See more


CYMI-MASA defines Quality as a permanent and priority objective, based both on the interests and needs of the actual Company as the needs and expectations of our Customers.See more


CYMI-MASA is aware of the importance of the environment and of its responsibility to protect the environment in the course of the company’s different activities.See more

Office Locations

CYMIMASA has offices throughout the world to provide our services to local clients at an international level.See more

Office Locations in Spain

CYMI y MASA has offices in almost all the Spanish provinces and major industrial centersSee more

Head Office Madrid

The headquarters of our company is located on the outskirts of Madrid, next to the M-11 that leads to the airport Madrid – BarajasSee more