Botswana Exports of thermionic, cold cathode or photo-cathode valves and tubes to Namibia was US$69.31 Thousand during 2020, according to the United Nations COMTRADE database on international trade. Botswana Exports of thermionic, cold cathode or photo-cathode valves and tubes to Namibia - data, historical chart and statistics - was last updated on May of 2024.