The duties range from Rs 1,206 a tonne on supplies by Kangwal Polyester Co, Thailand, to Rs 1,901 a tonne on those made by Saehan Industries Inc, Seoul, South Korea. Supplies by any other company in Korea will attract duties at Rs 2,167 a tonne.

The ministry's investigations followed a written application from Indo-Rama Synthetics, Madhya Pradesh, supported by another company JCT Ltd, Punjab, on behalf of the domestic industry alleging dumping of PSF through supplies by Indonesia, Taiwan, Thailand and South Korea.

The application had also the support of the Association of Sythentic Fibre Industry.

PSF of all deniers, lustre and length for spun yarn, including super hightenacity PSF will be covered by the duties, which will be effective from the date ofissue of a notification in this regard by the government. PSF for non-spun yarn category, including that used for stuffing, has been excluded from the scope of the duties.

The ministry has, however, not considered it necessary to impose provisional anti-dumping duties on PSF exported by Indonesia and Taiwan and a Thailand firm, Teijin Polyester (Thailand).

In imposing the duties, the designated authority set up in the commerce ministry to probe dumping cases has come to the conclusion that PSF originating from the above-mentioned countries has been exported to India below the normal value resulting in dumping. Further, the Indian industry has suffered material injury and that it has been caused by imports from these countries.