Basic duty on nylon filament yarn above 750 deniers imposed under amended excise notification, altering tariff treatment. The Central Government amends Notification No. 47/90 Central Excises by inserting a new table entry after S. No. 47 to impose a basic duty on nylon filament yarn above 750 deniers under the specified tariff headings, thereby specifying the applicable basic duty rate and altering the excise tariff treatment of that yarn.