An investigation initiated and conducted either following a complaint by the domestic industry producing the like product or (in special circumstances) self-initiated by importing country authorities to determine whether dumping of a product is occurring and is injuring national producers (or a third country's exporters) of the like product. Provisional duties may be applied during the investigation.
Example: An antidumping investigation was initiated by the European Union in respect of imports of “steel wire rod” from Country A.