Malawi Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Hong Kong was US$871 during 2019, according to the United Nations COMTRADE database on international trade. Malawi Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Hong Kong - data, historical chart and statistics - was last updated on June of 2024.