COMSA Corporación is the largest unlisted Spanish group in the infrastructures and engineering sector. It is the seventh largest Spanish company in the sector with a turnover of €1,101 million and over 8,300 employees. One of the pillars of COMSA Corporación’s progress is its international operations. The company is currently present in 24 countries: Andorra, Algeria, Argentina, Australia, Brazil, Chile, Colombia, Croatia, Denmark, France, Latvia, Lithuania, Morocco, Mexico, Paraguay, Peru, Poland, Portugal, Romania, Spain, Sweden, Switzerland, Turkey and Uruguay.

COMSA Corporación mainly operates in the fields of Infrastructures and Industrial Engineering, Services and Technology and Concessions and Renewable Energy.  With more than a century of experience behind it, COMSA is synonymous with commitment, stability and excellence in everything that it delivers.


TSK is the leading Spanish business group with the most references in EPC projects in the energy, industrial, minerals handling and environment sectors. Today the Company has a turnover of more than € 1000 million, with over 1000 professionals and experience in more than 50 countries.

Throughout its 30 years of market presence, the company’s priority has always been to meet the needs of its customers by offering them the highest technical and human resources necessary every step of the way.

The company's aim is to lead by innovation, and in 2020 TSK has obtained the national Quality Innovation Award (QiA) for the third consecutive year by the Association of Centres for Excellence (CEX). These recognitions cement the company’s reputation as the industrial and energy sectors’ frontrunner in innovation.