Angola Exports of niobium, tantalum, vanadium or zirconium ores and concentrates to China was US$3.82 Thousand during 2019, according to the United Nations COMTRADE database on international trade. Angola Exports of niobium, tantalum, vanadium or zirconium ores and concentrates to China - data, historical chart and statistics - was last updated on May of 2024.