The Customs and Economic Union of Central Africa, established by the Brazzaville Treaty in 1966, forms a customs union with free trade between members and a common external tariff for imports from other countries. The members of UDEAC are Cameroon, Central Africa Republic, Chad, Congo, Equatorial Guinea and Gabon. UDEAC has signed a treaty for the establishment of a Economic and Monetary Community in Central Africa to promote the entire process of sub-regional integration.
As with COMESA and ECOWAS, although there are no direct preferences offered to South African goods, benefits to contractors operating in the region should be explored.
Source:http://www.mbendi.com