Imports In 2018, Republic of the Congo imported $42.1k in Natural magnesium carbonate (magnesite), becoming the 0th largest importer of Natural magnesium carbonate (magnesite) in the world. At the same year, Natural magnesium carbonate (magnesite) was the 0th most imported product in Republic of the Congo. Republic of the Congo imports Natural magnesium carbonate (magnesite) primarily from: N/A.