Explanatory notes
… in the Nomenclature : (A) Tungsten (wolfram) (heading 81.01), molybdenum (heading 81.02), tantalum (heading 81.03), magnesium (heading 81.04), … 81.08), zirconium (heading 81.09), antimony (heading 81.10) and manganese (heading 81.11). (B) Beryllium, chromium, …