Customs tariff amendment creates nil-duty exemption for goods specified in companion notification under section 3A. An amendment inserts entry 53D into notification No. 23/2002 Customs, establishing a nil-duty exemption for all goods specified against S.No. 426A of the Table annexed to notification No. 21/2002 Customs; the Central Government acts under section 3A of the Customs Tariff Act, 1975 to set the duty as Nil.