Anti-dumping duty on Isobutylene-Isoprene Rubber imposed to counter dumping and remove injury to domestic industry. Definitive anti dumping duties are imposed on Isobutylene Isoprene Rubber (tariff item 4002 31 00) originating in or exported from China, Russia, Saudi Arabia, Singapore and the United States, based on the designated authority's adoption of a Product Control Number methodology, positive dumping margins and material injury to the domestic industry. Country and producer specific duty rates are prescribed per metric ton in US dollars, payable in Indian currency for five years, with exchange rate determined as per Government of India notifications and relevant bill of entry date.