Customs tariff amendments revise exemption entries, adjust duty rates, and expand concessional import conditions for selected goods. Amendment modifies the customs exemption notification by inserting and substituting tariff headings and serial entries, omitting specified entries, and changing duty percentages for a range of goods including foodstuffs, coal, machinery components, gemstone pre-forms and automotive imports. It refines vehicle import descriptors and adjusts related duty entries. The proviso dates in two clauses are extended. The Annexure revises concessional conditions by allowing servicing of private aircraft including parts, extends retention periods for several entries, deletes one condition, and expands List 29 by substituting and adding numerous footwear and leather industry machines.