Switzerland Exports of unsaturated acyclic or cyclic monocarboxylic acids, their anhydrides to Brunei was US$74 during 2004, according to the United Nations COMTRADE database on international trade. Switzerland Exports of unsaturated acyclic or cyclic monocarboxylic acids, their anhydrides to Brunei - data, historical chart and statistics - was last updated on May of 2024.