Guyana Imports of sulfates, alums, peroxosulfates (persulfates) from Swaziland was US$223.35 Thousand during 2021, according to the United Nations COMTRADE database on international trade. Guyana Imports of sulfates, alums, peroxosulfates (persulfates) from Swaziland - data, historical chart and statistics - was last updated on May of 2024.