However, export earnings are low as a result of a government ban on the export of certain species of wood. Fishing centres largely on freshwater fishing for subsistence purposes, while deep-sea fishing is slowly gaining importance, especially around the port of Douala. Industry - Petroleum and limestone are mined. Natural gas, bauxite, iron ore and tin remain undeveloped. Other industries include refining, food processing, light consumer goods, textiles and lumber.
Manufacturing is based on the processing of indigenous primary products and imported raw materials.
Expansion is taking place in the agriculture-based light manufacturing sector in areas such as dairy products, fruit juices, soap and beer which aim at local substitution of the more expensive imports. The construction sector is experiencing expansion, particularly in the area of road construction. Telecommunications Direct dialling is available from South Africa on dial code 09237 followed by subscribers telephone number. Telefax machines are increasingly available, although only to government and business. The metric system is used.