Vietnam Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Canada was US$3.88 Thousand during 2020, according to the United Nations COMTRADE database on international trade. Vietnam Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Canada - data, historical chart and statistics - was last updated on May of 2024.