Romania Imports of niobium, tantalum, vanadium or zirconium ores and concentrates from Guyana was US$277 during 2018, according to the United Nations COMTRADE database on international trade. Romania Imports of niobium, tantalum, vanadium or zirconium ores and concentrates from Guyana - data, historical chart and statistics - was last updated on May of 2024.