Imports In 2022, Brunei imported $1.5k in Limestone materials for manufacture of lime or cement, becoming the 157th largest importer of Limestone materials for manufacture of lime or cement in the world. At the same year, Limestone materials for manufacture of lime or cement was the 3341st most imported product in Brunei. Brunei imports Limestone materials for manufacture of lime or cement primarily from: Malaysia ($1.5k).