Cameroon Imports of pebbles, gravel, flint, macadam of slag, tarred macadam from Portugal was US$1.22 Thousand during 2019, according to the United Nations COMTRADE database on international trade. Cameroon Imports of pebbles, gravel, flint, macadam of slag, tarred macadam from Portugal - data, historical chart and statistics - was last updated on May of 2024.