Congo Imports of sulfates, alums, peroxosulfates (persulfates) from St Kitts and Nevis was US$7.28 Thousand during 2016, according to the United Nations COMTRADE database on international trade. Congo Imports of sulfates, alums, peroxosulfates (persulfates) from St Kitts and Nevis - data, historical chart and statistics - was last updated on May of 2024.