Laos Exports of coke, semi-coke of coal, of lignite, of peat; retort carbon to South Korea was US$3.35 Thousand during 2011, according to the United Nations COMTRADE database on international trade. Laos Exports of coke, semi-coke of coal, of lignite, of peat; retort carbon to South Korea - data, historical chart and statistics - was last updated on May of 2024.