As of 2018, POSCO was the largest steel producer in South Korea, with a production volume of 42.86 million metric tons. According to the source, the leading three steel producers accounted for around 94 percent of the total production volume of steel in South Korea.
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International Trade Administration. (September 30, 2019). Leading steel producers in South Korea in 2018, based on production volume (in million metric tons) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 29, 2026, from /statistics/948728/south-korea-major-steel-producers-based-on-production-volume/
International Trade Administration. "Leading steel producers in South Korea in 2018, based on production volume (in million metric tons)." Chart. September 30, 2019. ÌÇÐÄÆƽâ°æ. Accessed July 29, 2026. /statistics/948728/south-korea-major-steel-producers-based-on-production-volume/
International Trade Administration. (2019). Leading steel producers in South Korea in 2018, based on production volume (in million metric tons). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 29, 2026. /statistics/948728/south-korea-major-steel-producers-based-on-production-volume/
International Trade Administration. "Leading Steel Producers in South Korea in 2018, Based on Production Volume (in Million Metric Tons)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 30 Sep 2019, /statistics/948728/south-korea-major-steel-producers-based-on-production-volume/
International Trade Administration, Leading steel producers in South Korea in 2018, based on production volume (in million metric tons) ÌÇÐÄÆƽâ°æ, /statistics/948728/south-korea-major-steel-producers-based-on-production-volume/ (last visited July 29, 2026)
Leading steel producers in South Korea in 2018, based on production volume (in million metric tons) [Graph], International Trade Administration, September 30, 2019. [Online]. Available: /statistics/948728/south-korea-major-steel-producers-based-on-production-volume/
