Brunei is located in South-Eastern Asia, bordering the South China Sea and Malaysia. It is the third-largest oil producer in Southeast Asia and fourth-largest producer of liquefied natural gas in the world. Major export partners include regional neighbours such as Japan, South Korea, Indonesia, and India as well as Australia. Exports rely mainly on crude petroleum and petroleum gas. Brunei's foreign investments make up a large contribution to the economy, while small-scale manufacturing and primary production are the main non-oil sectors. The domestic market is highly import-dependent with a substantial share of imports originating from neighbouring countries. Brunei is a member of the World Trade Organization (WTO) and of the Association of Southeast Asian Nations (ASEAN).