Brunei Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Singapore was US$6.94 Thousand during 2021, according to the United Nations COMTRADE database on international trade. Brunei Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Singapore - data, historical chart and statistics - was last updated on May of 2024.