Imports In 2011, Macau imported $231 in Dithionites and Sulfoxylates, becoming the 0th largest importer of Dithionites and Sulfoxylates in the world. At the same year, Dithionites and Sulfoxylates was the 0th most imported product in Macau. Macau imports Dithionites and Sulfoxylates primarily from: N/A.