Construction of civil engineering structures, namely, bridges, roads, railways, ports, airports, dams, and containment dams with concrete units; Services for the construction of buildings and infrastructures, namely, consultancy services in the field of construction, construction management and supervision of construction works, providing information in the field of building and construction of bridges, roads, railways, ports, airports, dams, containment dams and bridges, and rental of construction machinery and equipment; Rental of construction and building demolition tools, machines and equipment; Repair and maintenance of buildings and masonry structures, providing information on repair of bridges, roads, railways, ports, airports, dams, containment dams, and cleaning services for interior and exterior surfaces of buildings; services for installation during the construction of bridges, roads, railways, ports, airports, dams, containment dams, namely, installation of masonry walls and concrete structures

Consultancy and research services in the fields of civil engineering, railway system engineering, aeronautical engineering, and naval architecture engineering, namely, consultancy and research regarding civil engineering technology, design, and planning; Technical project studies, namely technical research in the fields of environmental protection and quality control; Urban planning and consultancy in the field of architecture; Planning of construction projects, namely, planning of buildings and infrastructure systems for buildings; Testing and geological analyses in the nature of conducting geological surveys; Design of engineering building systems, namely, infrastructure systems for buildings; Structural engineering services, namely, analysis of the structural behavior of building materials; Civil engineering research on the construction of buildings or urban planning; Development of computer programs designed for use in construction and engineering; Environmental testing and inspection services, namely, measuring environmental conditions in civil engineering structures; Conducting engineering surveys