Producer
Young Poong Corporation
Young Poong Corporation (Seoul; KRX: 000670) is a Korean zinc smelter operator whose Seokpo smelter in Bonghwa-gun, Gyeongsangbuk-do is the world's sixth-largest zinc producer and one of Korea's indium producers. The Seokpo facility has annual indium production capacity of approximately 100 tonnes. Young Poong is a significant shareholder in Korea Zinc (and involved in a contentious governance dispute in 2024-2025). The Seokpo smelter was ordered to suspend operations for 58 days (February 26–April 24, 2026) by the Supreme Court of Korea due to cadmium wastewater discharge violations into the Nakdong River — the facility has accumulated 76 environmental violations since 2013. This suspension created a notable short-term indium supply disruption.
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Zinc Smelting (Seokpo)
65%Indium (Byproduct)
20%Other Metals & Byproducts
10%Korea Zinc Shareholding
5%
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Incident2026
Young Poong's Seokpo smelter was ordered suspended for 58 days (February 26 – April 24, 2026) by the Supreme Court of Korea following conviction for cadmium wastewater discharge into the Nakdong River — one of South Korea's longest rivers and a major drinking water source for the Busan-Gyeongnam metropolitan region (~7 million people). The court ordered the suspension specifically because Seokpo had accumulated 76 environmental violations since 2013 without operational reform. The suspension created an immediate disruption to global indium supply: Young Poong's Seokpo facility produces approximately 100 tonnes of indium per year, representing roughly 3-4% of global supply. The incident illustrates that environmental regulatory actions at single-plant indium producers can create measurable short-term supply disruptions for the flat panel display and semiconductor industries that depend on ITO from indium sources.
The Korea Herald ↗Origin2023
Young Poong Corporation's Seokpo smelter in Bonghwa-gun, Gyeongsangbuk-do, South Korea has been a significant indium producer as a byproduct of zinc smelting since the 1970s. The Seokpo facility was built during Korea's rapid industrialization era with government support for heavy industry development in the southeastern Korean interior. Young Poong grew to become one of the largest zinc producers in Asia, with the indium byproduct business emerging as zinc ores in the region naturally contain trace indium that concentrates during smelting.
Young Poong Corporation ↗