Bulgaria Imports from Ukraine of Coke, Semi-coke of Coal, of Lignite, of Peat; Retort Carbon was US$1.89 Million during 2021, according to the United Nations COMTRADE database on international trade. Bulgaria Imports from Ukraine of Coke, Semi-coke of Coal, of Lignite, of Peat; Retort Carbon - data, historical chart and statistics - was last updated on May of 2024.