Japan Exports of niobium, tantalum, vanadium or zirconium ores and concentrates to Vietnam was US$67.56 Thousand during 2016, according to the United Nations COMTRADE database on international trade. Japan Exports of niobium, tantalum, vanadium or zirconium ores and concentrates to Vietnam - data, historical chart and statistics - was last updated on May of 2024.