Zambia Exports of refined copper and alloys (no mast alloy), unwrought to Swaziland was US$1.19 Million during 2018, according to the United Nations COMTRADE database on international trade. Zambia Exports of refined copper and alloys (no mast alloy), unwrought to Swaziland - data, historical chart and statistics - was last updated on May of 2024.