MRP based duty: insertion of a tariff entry for routers imposes a specified MRP-based duty under central excise. The notification amends the principal central excise notification by inserting a new serial entry 88A for routers under tariff classification 8517 69 30, attaching the numeric duty notation '20' in the table; the amendment is effected under section 4A of the Central Excise Act, 1944 to further modify Notification No.49/2008-Central Excise (N.T.).