Customs tariff amendments revise product classifications and duty rates, adding targeted definitions and new tariff items. Amendments to the Customs Tariff First Schedule substitute and insert tariff items, revise duty rates, and add supplementary definitions. The changes reclassify goods across multiple chapters-adding items for wafers, menthol, paracetamol, silicon epitaxial films, ballistic protection goods, portable bridges, hydraulic systems, specific machinery and vehicle categories-and introduce definitions for Blended Aviation turbine fuel, Natural Menthol, Special Finishes, and E-bicycle to determine tariff coverage and duty application.