Postponement of Customs Duty Implementation shifts effective date for specified imports from USA to early May. Amends Notification No. 50/2017-Customs by substituting the implementation date in the third proviso to postpone the increase in customs duty on specified imports originating in the United States, effected under the Statutory Authority of section 25 of the Customs Act, 1962 and section 3(12) of the Customs Tariff Act, 1975, as a further amendment to the principal notification of 30th June, 2017.