Taiwanese upstream stainless steelmakers, including Yieh United Steel Corporation (Yusco) and Tang Eng Iron Works, anticipate market relief as the Ministry of Finance officially opened an anti-dumping (AD) investigation into cold-rolled, flat-rolled stainless steel products from Vietnam.

Local producers requested protective measures and retroactive tariffs to counter underpriced steel, which was redirected into Taiwan after South Korea enacted AD duties ranging from 11.37% to 18.81%.

Vietnamese import volumes grew dramatically, exceeding 36,000 tons in 2025 at prices undercutting local rates. With preliminary decisions anticipated by late 2026, the proceedings and prospective retroactive duties threaten to deter cheap import surges, restore fair competition, and deliver significant trade benefits to Taiwan's upstream stainless steel industry.