Imports In 2018, Brunei imported $43 in Phenylacetic acid, its salts & esters, becoming the 0th largest importer of Phenylacetic acid, its salts & esters in the world. At the same year, Phenylacetic acid, its salts & esters was the 0th most imported product in Brunei. Brunei imports Phenylacetic acid, its salts & esters primarily from: N/A.