Sejong Industrial

Sjg Sejong Co.,Ltd researches, develops, produces, and supplies automotive parts in South Korea and internationally. Its offerings include exhaust systems such as exhaust manifolds, catalytic converters, selective catalytic reduction (SCR) units, sub resonators, and main resonators for passenger and commercial vehicles. The company also provides electronic devices for hydrogen fuel cell vehicles, including hydrogen sensors, pressure sensors, pressure relief valve-H2, and water trap components, as well as electromechanical parts and function modules for exhaust systems, such as nitrogen oxide, temperature, differential pressure, oxygen, and particulate matter sensors, and urea-SCR systems, plus wheel speed sensors. It additionally develops green energy products, including a portable fuel cell system using hydrogen energy and a power generator that converts liquefied petroleum gas into hydrogen gas and then into electricity. Formerly known as Sejong Industrial Co., Ltd., it changed its name to Sjg Sejong Co.,Ltd in April 2024, was founded in 1976, and is based in Ulsan, South Korea.