Imports In 2013, Macau imported $19.7k in Cobalt Oxides and Hydroxides, becoming the 0th largest importer of Cobalt Oxides and Hydroxides in the world. At the same year, Cobalt Oxides and Hydroxides was the 0th most imported product in Macau. Macau imports Cobalt Oxides and Hydroxides primarily from: N/A.