Construction, repair and installation of homes, buildings, roads, vessels, railways and offshore oil rigs; Dredging; Construction and renovation of homes, apartments, offices, schools and hospitals; Construction project management services in the field of construction of vessels; Construction project management services in the field of construction of offshore oil and gas facilities; Construction and maintenance of cables and pipes; Asphalting; Construction consultancy; Cleaning of buildings, building exterior surfaces, houses, industrial premises, construction sites, commercial premises, vehicles and roads; Construction of roads; Maintenance and repair of roads; Rental of construction machines and apparatus; House and building demolition