Russia Exports of coke, semi-coke of coal, of lignite, of peat; retort carbon to Serbia was US$1.15 Million during 2019, according to the United Nations COMTRADE database on international trade. Russia Exports of coke, semi-coke of coal, of lignite, of peat; retort carbon to Serbia - data, historical chart and statistics - was last updated on June of 2024.