Bulgaria Imports of coke, semi-coke of coal, of lignite, of peat; retort carbon from Spain was US$12.32 Thousand during 2023, according to the United Nations COMTRADE database on international trade. Bulgaria Imports of coke, semi-coke of coal, of lignite, of peat; retort carbon from Spain - data, historical chart and statistics - was last updated on May of 2024.