Anti-dumping duty on sodium hydrosulphite imposed, with differentiated exporter rates and effect from the provisional duty date. Imposition of an anti-dumping duty on sodium hydrosulphite from the People's Republic of China after findings of export below normal value and material injury causally linked to those imports; one exporter offered then withdrew a price undertaking. The Central Government, under section 9A of the Customs Tariff Act and applicable anti-dumping rules, prescribed differentiated duty rates by exporter, made the duty effective from the provisional duty date, required payment in Indian currency, and specified use of Government-notified exchange rates with the bill-of-entry date as the relevant date.