Zambia Imports from Congo of Coke, Semi-coke of Coal, of Lignite, of Peat; Retort Carbon was US$945.3 Thousand during 2011, according to the United Nations COMTRADE database on international trade. Zambia Imports from Congo of Coke, Semi-coke of Coal, of Lignite, of Peat; Retort Carbon - data, historical chart and statistics - was last updated on May of 2024.