Tariff amendment: revised excise duty rates and tariff entries updated across multiple chapters altering classification. Amendments to the Central Excise Tariff Schedule substitute and insert revised duty entries and tariff descriptions across numerous chapters and sub headings, replacing existing column (4) rates with new specific duties, ad valorem percentages, or combined formulae, and omit or renumber specified headings and sub headings to effect reclassification and updated duty application.