Singapore Exports of nails, tacks, staples, screws, bolts, nuts, of copper to Northern Mariana Islands was US$26 during 2011, according to the United Nations COMTRADE database on international trade. Singapore Exports of nails, tacks, staples, screws, bolts, nuts, of copper to Northern Mariana Islands - data, historical chart and statistics - was last updated on May of 2024.