Imports In 2015, Oman imported $951 in Dithionites and sulphoxylates of metals except sodium, becoming the 0th largest importer of Dithionites and sulphoxylates of metals except sodium in the world. At the same year, Dithionites and sulphoxylates of metals except sodium was the 0th most imported product in Oman. Oman imports Dithionites and sulphoxylates of metals except sodium primarily from: N/A.