BEIJING, July 3 (Xinhua) -- He Guoqiang, top anti-graft official of the Communist Party of China (CPC), will pay a friendly visit to Angola from July 3-6.

    He is a member of the Standing Committee of the Political Bureau of the CPC Central Committee and secretary of the CPC's Central Commission for Discipline Inspection.

    The following are some key facts about the sub-Saharan country in southwest Africa.

    Bordering Congo and the Democratic Republic of the Congo (DRC) on the south, Zambia on the west, Namibia on the north and the Atlantic Ocean on the east, Angola covers a land area of 1,246,700square km with a population of some 13.1 million.

    Portuguese is the official language, but Umbundu, Kimbundu, Kikongo, Tchokwe and Ovambo are the national languages.

    As Portugal's colony, the Angolans struggled for independence in the 1950s.

    In 1975, Angola declared independence after the People's Liberation Movement of Angola (MPLA), the Angolan National Liberation Front (FNLA) and the National Union for Total Independence of Angola (UNITA) reached agreements with the Portuguese government.

    After independence, the country was plunged into a 27-year civil war, which was brought to an end in April 2002 when the Angolan government signed a truce deal with UNITA.

    Angola is rich in resources, such as crude oil, natural gas, diamond, iron, copper, gold, quartz and marble. Oil is the mainstay of Angola's economy.

    Coffee, sugar cane, cotton, sisal and peanuts are Angola's major cash crops, while maize, cassava, rice, wheat and peas are the country's main agricultural crops.

    Angola established diplomatic ties with China on Jan. 12, 1983.Bilateral trade volume reached 14.1 billion U.S. dollars in 2007.