Domestic industry definition governs producer eligibility, related-party treatment, separate markets, and participation in anti-dumping duty investigations.

Anti-dumping duty rules define domestic industry as domestic producers collectively manufacturing the like article or accounting for a major proportion of its domestic production. Related producers and producer-importers may be excluded, with control determined by legal or operational capacity to exercise restraint or direction. Separate competitive markets may constitute distinct domestic industries where local production is sold almost entirely within the market and demand is not substantially supplied from elsewhere. The rules also define interested parties, like article, period of investigation, provisional duty and specified country.

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