India’s trade remedy authority found Vietnamese hot rolled flat steel was dumped, hurting domestic mills through undercutting & margin compression. Imports jumped from negligible levels to over 660,000 metric tons in the extended period of investigation. A NIL duty applies for cooperating producer Hoa Phat, residual definitive duty hits others for 5 years. Authority judged consumer impact minimal, citing modest downstream cost pass through & ample indigenous capacity to substitute unfairly priced inflows.