South Korea Imports of pebbles, gravel, flint, macadam of slag, tarred macadam from Costa Rica was US$35 during 2020, according to the United Nations COMTRADE database on international trade. South Korea Imports of pebbles, gravel, flint, macadam of slag, tarred macadam from Costa Rica - data, historical chart and statistics - was last updated on May of 2024.