Abu Dhabi National Oil Company (ADNOC) was established in 1971 to operate in all areas of the oil and gas industry. Since then, ADNOC has steadily broadened its activity in establishing companies and subsidiaries and creating an integrated oil and gas industry in the fields of exploration and production, support services, oil refining and gas processing, chemicals and petrochemicals, maritime transportation and refined products and distribution. ADNOC and its Group of Companies have several business relationships with American firms and institutions.