India will make a second request for the World Trade Organization to investigate US antidumping duties on shrimp, which Washington is already defending in two separate trade disputes, according to an official.

Paven Kapoor, of India’s mission to the WTO, said a US policy that forces Indian shrimp exporters to take out a customs bond equal to about a year’s worth of duties would be raised at a meeting of the Geneva-based organization on Nov. 21.

Governments impose antidumping duties when they suspect producers are exporting products at below the market price in their own country - usually because exports have been subsidized or if it is believed there is an attempt to corner the market.

Kapoor said the US practice was a form of unfair discrimination and violated WTO agreements.

“They have singled out a few countries and only one product, shrimp, for the moment,” he told The AP.

The US recently blocked India’s first request for the WTO to launch a formal investigation. Under WTO rules, an investigative panel is automatically established with the second request.

The WTO already is investigating whether US duties on shrimp imports from Ecuador and Thailand violate international trade rules.

The US also applies antidumping fees on shrimp from Brazil, China and Vietnam. (Dow Jones Newswires)