Singapore Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to New Zealand was US$6.21 Thousand during 2021, according to the United Nations COMTRADE database on international trade. Singapore Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to New Zealand - data, historical chart and statistics - was last updated on May of 2024.