Customs tariff amendments update exemption schedules and HS code references, revising descriptions and applicable duty rates. Amendments to multiple Customs exemption notifications substitute and insert HS codes, modify commodity descriptions (including qualifiers like 'fresh or dried'), omit specified tariff figures, add new serial entries and assign concessional percentage rates for particular goods (notably fisheries items, newsprint dimensions, monopods/bipods/tripods by material, tyres and timber products), and harmonise table and appendix entries; the Notification prescribes precise textual changes to prior notifications and sets an effective commencement date.