Namibia Exports of refined copper and alloys (no mast alloy), unwrought to Swaziland was US$452.62 Thousand during 2012, according to the United Nations COMTRADE database on international trade. Namibia Exports of refined copper and alloys (no mast alloy), unwrought to Swaziland - data, historical chart and statistics - was last updated on May of 2024.