Customs tariff amendment revises exemption schedules, alters duty rates and inserts sectoral lists affecting import classification and eligibility. Amendments to the customs exemption notification substitute the preamble reference and add a proviso creating phased exclusions for specified table entries. The tariff Table is extensively amended: multiple serial entries have duty rates substituted, numerous entries are omitted, and new serial numbers and group entries are inserted, including a revised conditional concession for pharmaceutical and biotechnology goods contingent on registration or R&D status. The Annexure deletes selected lists, inserts Lists 26A, 27A, 48 and 49 naming eligible goods and components, and revises item descriptions and tariff headings, thereby redefining exemption scope and eligibility.