Excise exemption for goods used within factory for manufacture of goods under chapter 71, removing duty on intra-factory inputs. Amendment inserts a new tariff entry creating an excise duty exemption for all goods used within the factory of production when employed in the manufacture of goods covered by chapter 71, adding a nil duty serial entry to the Table of the principal notification No. 6/2002-Central Excise under the powers of section 5A of the Central Excise Act.