Congo Exports of niobium, tantalum, vanadium or zirconium ores and concentrates to Hong Kong was US$5.69 Million during 2023, according to the United Nations COMTRADE database on international trade. Congo Exports of niobium, tantalum, vanadium or zirconium ores and concentrates to Hong Kong - data, historical chart and statistics - was last updated on July of 2026.