Imports In 2021, Brunei imported $158 in Ethylene, propylene, butylene, butadiene, liquefied, becoming the 0th largest importer of Ethylene, propylene, butylene, butadiene, liquefied in the world. At the same year, Ethylene, propylene, butylene, butadiene, liquefied was the 0th most imported product in Brunei. Brunei imports Ethylene, propylene, butylene, butadiene, liquefied primarily from: N/A.