Tariff amendments: revised excise duty rates for specified starches, a supari exemption, and substituted entries prescribing 10% duties. Amendment revises tariff entries under Notification No. 3/2006 by prescribing a 4% effective rate of duty for maize, potato and tapioca starch; inserting a Nil rate exemption for betel nut product 'supari'; and substituting specified serial entries to prescribe a 10% effective duty rate for other listed goods.