Anti-dumping duty extension on melamine maintains import restrictions following the designated authority's review request. The Central Government has amended the principal notification imposing Anti-Dumping duty on melamine from China PR by substituting the earlier terminal date in paragraph 3 with a new terminal date, thereby extending the period during which the duty continues. The amendment follows a review initiation and successive requests from the designated authority for extension under the Customs Tariff statutory framework and implements the continuation mechanism while the review process proceeds.