Imports In 2022, Costa Rica imported $166k in Aluminium oxide, except artificial corundum, becoming the 104th largest importer of Aluminium oxide, except artificial corundum in the world. At the same year, Aluminium oxide, except artificial corundum was the 2774th most imported product in Costa Rica. Costa Rica imports Aluminium oxide, except artificial corundum primarily from: United States ($102k), Italy ($17.6k), China ($11.5k), Germany ($11.3k), and Denmark ($9.3k).