Explanatory notes
… which are not more specifically covered elsewhere in the Nomenclature : (A) Tungsten (wolfram) (heading 81.01), … 81.10) and manganese (heading 81.11). (B) Beryllium, chromium, hafnium, rhenium, thallium, cadmium, germanium, … out in Note 5 to Section XV; metal carbides are excluded from this Chapter. * * * The classification of composite …