EV Component Suppliers in South Korea

ADDTEC Co., Ltd. specializes in automotive electronic components and actuators. Founded in 2001 in South Korea, ADDTEC has developed expertise in designing and manufacturing electric motors, HVAC actuators, and mechatronic assemblies for vehicles. The company’s product range includes motor-driven blend door actuators for climate control systems, headlamp leveling actuators, and other precision motorized units that enhance vehicle comfort and functionality. With a state-of-the-art facility in Changwon, ADDTEC performs in-house processes such as plastic injection molding of housings, winding of motor coils, and final assembly under strict quality control. Its engineering team collaborates with automotive OEMs to customize actuator solutions that meet space, weight, and performance targets. ADDTEC’s commitment to innovation and reliability has made it a trusted supplier of small automotive motors and actuator systems in the Asia-Pacific market.

POSCO Holdings is one of the worlds largest steel producers with over 50 years of manufacturing excellence, producing 41 million tons of crude steel annually. Founded in 1968, they have evolved into a global materials science company with diversified operations in steel, energy, engineering, construction, and trading. POSCOs comprehensive steel portfolio includes advanced automotive steel grades, electrical steel, stainless steel, and specialty alloys delivered through world-class production facilities in Korea and international locations. Their technical leadership in high-strength automotive steels enables vehicle weight reduction, enhanced safety, and improved fuel efficiency. POSCOs commitment to innovation, quality, and sustainability has established them as a preferred development partner for global automotive OEMs seeking sophisticated steel solutions. Their advanced R&D capabilities continuously develop new materials and processes that address evolving market requirements for lightweighting, electrification, and environmental performance while creating value throughout the supply chain.

Star Group Ind. (SGI) is a South Korean magnet manufacturer renowned for high-performance rare earth magnets. With extensive know-how and patents, SGI produces advanced Nd–Fe–B (Neodymium) magnets for electric vehicle motors and other demanding applications. The company is expanding globally – partnering with POSCO to establish magnet production in the US – to supply magnets using non-Chinese rare earth sources. Founded in 1994, SGI has become South Korea’s leading rare earth magnet producer. Their commitment to innovation (e.g. proprietary split-magnet designs to reduce eddy currents) and quality makes SGI a reliable partner for automotive OEMs seeking top-tier magnet solutions.

Sam Dong (est. 1977) is a Korean manufacturer of OFHC copper and specialty winding wires. It pioneered domestic production of high-conductivity copper rods, CTC, rectangular wires and other magnet wires. Sam Dong has expanded to the USA (Ohio, Georgia) and supplies high-quality magnet wire to automotive, power generation, and renewable energy markets. The company focuses on advanced processes like oxygen-free copper to meet critical winding requirements.

EcoPro BM is a South Korean leader in cathode materials and lithium-ion battery manufacturing. A subsidiary of EcoPro Group, it specializes in high-nickel NCM cathodes and supplies battery cells for electric vehicles and energy storage systems. Founded in 2016, EcoPro BM has become a key supplier to global battery makers like Samsung SDI and SK On, with its high-performance cathode materials enabling energy-dense, long-life batteries. The company operates advanced production facilities in South Korea and is expanding internationally, including a new plant in Hungary to serve European automakers. EcoPro BM’s R&D focuses on next-generation materials like NCA and solid-state electrolytes, backed by thousands of patents. Its commitment to sustainability includes recycling programs to recover lithium and cobalt. With a robust supply chain and innovative materials, EcoPro BM is driving advancements in EV battery performance and cost competitiveness.