Anti-dumping duty extension: imports of O Ester from China treated as circumvention and subject to extended duties. Following a finding of circumvention and dumping, anti dumping duties are imposed on imports of Ofloxacin Ester (O Ester) from China, extending the existing ADD on O Acid. The notification prescribes exporter and producer specific duty rates for the tariff heading, a residual rate for other combinations, and separate entries for imports where China is origin or exporter. Duties are expressed in foreign currency per unit but payable in Indian currency, with the exchange rate determined by the notified Customs Act rate on the bill of entry date. The duties are co terminus with the ADD on O Acid.