Information
82 Hyoja-ro, Buk-gu, Ulsan, South Korea
+82 52-283-2211
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Overview
- Summary
- SJG Sejong Co., Ltd. is an automotive exhaust system specialist established in 1976, producing mufflers and converters. The company has evolved into a leading automotive exhaust system provider in South Korea, expanding its business into eco-friendly mobility solutions, including electrification components like WSS and SBW, hydrogen fuel cell systems, and autonomous driving robots, through continuous global market and customer expansion.SJG Sejong Co., Ltd. is an automotive exhaust system specialist established in 1976, producing mufflers and converters. The company has evolved into a leading automotive exhaust system provider in South Korea, expanding its business into eco-friendly mobility solutions, including electrification components like WSS and SBW, hydrogen fuel cell systems, and autonomous driving robots, through continuous global market and customer expansion.
- Key Products/Technologies
- Exhaust Systems: Production of various exhaust system components such as Gasoline Particulate Filters (GPF), Selective Catalytic Reduction (SCR), Exhaust Heat Recovery Systems, Electric Control Exhaust Valves, main resonators, sub resonators, catalytic converters, and exhaust manifolds. Capabilities in developing and mass-producing exhaust systems for both passenger and commercial vehicles. Catalytic converters reducing harmful exhaust emissions and improving air quality.Exhaust Systems: Production of various exhaust system components such as Gasoline Particulate Filters (GPF), Selective Catalytic Reduction (SCR), Exhaust Heat Recovery Systems, Electric Control Exhaust Valves, main resonators, sub resonators, catalytic converters, and exhaust manifolds. Capabilities in developing and mass-producing exhaust systems for both passenger and commercial vehicles. Catalytic converters reducing harmful exhaust emissions and improving air quality.
- Hydrogen Solutions: Development and supply of core components such as hydrogen sensors, metal bipolar plates for fuel cells, water traps, and Hydrogen Exhaust Systems (HES). Efforts to contribute to the advancement of hydrogen fuel cell vehicle technology and lead the shift towards eco-friendly automobiles.Hydrogen Solutions: Development and supply of core components such as hydrogen sensors, metal bipolar plates for fuel cells, water traps, and Hydrogen Exhaust Systems (HES). Efforts to contribute to the advancement of hydrogen fuel cell vehicle technology and lead the shift towards eco-friendly automobiles.
- Electrification Components: Development of smart car-related components including Wheel Speed Sensors (WSS), Integrated Charging Control Units (ICCU), Shift By Wire Actuators (SBW), pressure sensors, and hydrogen pressure relief valves. Possession of actuator technology for electrically controlling automatic transmission detent positions.Electrification Components: Development of smart car-related components including Wheel Speed Sensors (WSS), Integrated Charging Control Units (ICCU), Shift By Wire Actuators (SBW), pressure sensors, and hydrogen pressure relief valves. Possession of actuator technology for electrically controlling automatic transmission detent positions.
- Core Technologies: Development capabilities in eco-friendly technologies such as noise reduction, exhaust heat recovery, and component lightweighting. Manufacturing techniques for improved product reliability and process accuracy, proprietary construction techniques for cost savings and productivity, and advanced oscillator welding methods for extended welding ranges.Core Technologies: Development capabilities in eco-friendly technologies such as noise reduction, exhaust heat recovery, and component lightweighting. Manufacturing techniques for improved product reliability and process accuracy, proprietary construction techniques for cost savings and productivity, and advanced oscillator welding methods for extended welding ranges.
- Core Advantages
- Domestic Market Leadership: Maintenance of a top market share in the domestic exhaust system market for both passenger and commercial vehicles. Position as South Korea's leading automotive exhaust system specialist. Market dominance with approximately 31% to 57.2% share in the domestic market.Domestic Market Leadership: Maintenance of a top market share in the domestic exhaust system market for both passenger and commercial vehicles. Position as South Korea's leading automotive exhaust system specialist. Market dominance with approximately 31% to 57.2% share in the domestic market.
- Global Production and R&D Network: Operation of numerous overseas production facilities and R&D centers in the US, China, Czech Republic, Slovakia, Mexico, Russia, India, Indonesia, and Vietnam. Transformation into a global company through continuous global market expansion and customer growth. Securing 27 production bases, 4 research centers, and presence in 14 countries.Global Production and R&D Network: Operation of numerous overseas production facilities and R&D centers in the US, China, Czech Republic, Slovakia, Mexico, Russia, India, Indonesia, and Vietnam. Transformation into a global company through continuous global market expansion and customer growth. Securing 27 production bases, 4 research centers, and presence in 14 countries.
- Technological Innovation and Business Diversification: Strategic expansion from an exhaust system specialist to an eco-friendly mobility solutions provider, encompassing electrification components, hydrogen fuel cell systems, and autonomous driving robots. Proactive response to environmental regulations and continuous investment in noise reduction, exhaust heat recovery, and component lightweighting technologies. R&D capabilities in intelligent electrification technology, hydrogen mobility, and electronic devices.Technological Innovation and Business Diversification: Strategic expansion from an exhaust system specialist to an eco-friendly mobility solutions provider, encompassing electrification components, hydrogen fuel cell systems, and autonomous driving robots. Proactive response to environmental regulations and continuous investment in noise reduction, exhaust heat recovery, and component lightweighting technologies. R&D capabilities in intelligent electrification technology, hydrogen mobility, and electronic devices.
- Quality and Information Security Excellence: Acquisition of international quality and environmental management system certifications including ISO9001, QS9000, and ISO14001. Consistent achievement of Hyundai/Kia's Quality 5-STAR, Technology 5-STAR, and Grand Quality 5-STAR ratings. Attainment of TISAX global information security certification (AL3 Level) from the European automotive manufacturing and supply association (ENX).Quality and Information Security Excellence: Acquisition of international quality and environmental management system certifications including ISO9001, QS9000, and ISO14001. Consistent achievement of Hyundai/Kia's Quality 5-STAR, Technology 5-STAR, and Grand Quality 5-STAR ratings. Attainment of TISAX global information security certification (AL3 Level) from the European automotive manufacturing and supply association (ENX).
- Target Industries
- Automotive industry (passenger cars, commercial vehicles)Automotive industry (passenger cars, commercial vehicles)
- Eco-friendly mobility industry (hydrogen electric vehicles, electric vehicles, hybrid vehicles)Eco-friendly mobility industry (hydrogen electric vehicles, electric vehicles, hybrid vehicles)
- Off-road vehicles for construction and agricultureOff-road vehicles for construction and agriculture
- Major Markets
- EgyptEgypt
- China (Yancheng, Beijing, Taicang, Sichuan, Chongqing, Ningde), Vietnam, India, Indonesia, Kazakhstan, PakistanChina (Yancheng, Beijing, Taicang, Sichuan, Chongqing, Ningde), Vietnam, India, Indonesia, Kazakhstan, Pakistan
- Czech Republic, Slovakia, Russia, TurkiyeCzech Republic, Slovakia, Russia, Turkiye
- USA, MexicoUSA, Mexico
- Certifications/Patents
- ISO9001 Quality Management System certification (May 1996)ISO9001 Quality Management System certification (May 1996)
- QS9000 Quality Management System certification (April 2000)QS9000 Quality Management System certification (April 2000)
- Patent for automotive exhaust noise reduction device (January 2002)Patent for automotive exhaust noise reduction device (January 2002)
- ISO14001 Environmental Management System certification (November 2004)ISO14001 Environmental Management System certification (November 2004)
- TISAX global information security certification (AL3 Level) (October 2024)TISAX global information security certification (AL3 Level) (October 2024)
- Maintenance of Hyundai/Kia Quality 5-STAR, Technology 5-STAR, and Grand Quality 5-STAR ratingsMaintenance of Hyundai/Kia Quality 5-STAR, Technology 5-STAR, and Grand Quality 5-STAR ratings
- Possession of multiple patents (6 patents as of December 2025)Possession of multiple patents (6 patents as of December 2025)
Introduction
Location
82 Hyoja-ro, Buk-gu, Ulsan, South Korea
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