POSCO Holdings Inc. (PKX) has effectively localized the manufacturing technique for electrode rods, which are considered a critical element in the steel production process. Electrode rods are high-value-added carbon materials used in electric furnaces to melt steel scrap into molten iron or in refining procedures to eliminate impurities from blast furnace-produced molten iron. These rods convert electrical energy into thermal energy. The wider the diameter and electrode density, the higher the power output, ...