Kazakhstan Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Serbia was US$6.8 Thousand during 2014, according to the United Nations COMTRADE database on international trade. Kazakhstan Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Serbia - data, historical chart and statistics - was last updated on June of 2024.