Comsa Emte SL provides engineering services. The Company offers railway infrastructure, aggregate, precast concrete, and maintenance services. Comsa Emte serves customers worldwide.COMSA Corporación is the first Spanish group not listed in the infrastructure and engineering sector. With more than a century of experience, COMSA Corporación focuses its activity on the areas of Infrastructure and Industrial Engineering, Services and Technology and Concessions and Renewable Energies. One of the pillars of COMSA Corporación's progress is international activity.