Construcciones Y Obras Llorente, S.A., through its subsidiaries, engages in the businesses of construction, concessions, energy, and conservation. Its construction services include civil engineering services for infrastructure facilities, divided highways, highways, railways, agrarian structures, unique urban structures, environment and purification wastewater treatment plants (WWTP), drinking water treatment plants (DWTP), and waste treatment centers, and construction services for buildings, such as administrative facilities, residential and healthcare facilities, rehabilitation.