Slovakia Imports of pebbles, gravel, flint, macadam of slag, tarred macadam from Portugal was US$22.69 Thousand during 2023, according to the United Nations COMTRADE database on international trade. Slovakia Imports of pebbles, gravel, flint, macadam of slag, tarred macadam from Portugal - data, historical chart and statistics - was last updated on June of 2024.