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Ecopetrol SA is engaged in commercial and industrial activities related to the exploration, exploitation, refining, transportation, storage, distribution, and marketing of hydrocarbons, their derivatives, and products, as well as the electric power transmission services, design, development, construction, operation, and maintenance of road and energy infrastructure projects and the provision of information technology and telecommunications services. The operations of the company are performed through four business segments: Exploration and Production, Transport and Logistics, Refining and Petrochemical, and Electric Power Transmission and Toll Roads Concessions. The majority of the company's revenue is generated from the Refining and Petrochemical segment.
Telefonica operates mobile and fixed networks in Spain (where it is the incumbent telephone operator), the U.K., Germany, Brazil, and other Latin American countries like Colombia, Mexico, Argentina, and Chile, among others. The company derives more than 30% of its revenue from Spain, close to 20% from Germany and 20% from Brazil. Its U.K. operations are held through a joint venture with Virgin Media. For several years Telefonica has been simplifying its corporate structure by selling noncore assets.