(1)Where in respect of any article included in the First Schedule, the Central Government is satisfied that the import duty leviable thereon under section 12 of the Customs Act, 1962 should be increased and that circumstances exist which render it necessary to take immediate action, it may, by notification in the Official Gazette direct an amendment of that Schedule to be made so as to provide for an increase in the import duty leviable on such article to such extent as it thinks necessary:Provided that the Central Government shall not issue any notification under this sub-section for substituting. the rate of, import duty in respect of any article as specified by an earlier notification issued under this sub-section be that Government before such earlier notification has been approved with.or with. out modifications under sub-section (2).
