Anti-dumping duty extension on Iso-butyl Benzene pending review maintains duty continuation under Customs Tariff provisions. Continuation and extension of anti-dumping duty on Iso-butyl Benzene from China PR is effected by amendment to Notification No. 36/98-Customs, inserted to maintain the duty pending review, under powers conferred by the Customs Tariff Act and the Rules governing identification, assessment and collection of anti-dumping duty.