Sejong Industrial Co., Ltd. engages in the research and development, production, and supply of automotive parts in South Korea and internationally. The company offers exhaust systems, including exhaust manifold, catalytic converter, selective catalytic reduction (SCR), sub resonator, and main resonator products for passenger and commercial vehicles. It also provides electronic devices, such as hydrogen sensor, pressure sensor, pressure relief valve-H2, and water trap components of driving devices for hydrogen fuel cell vehicles; electromechanical parts and functions modules related to the exhaust systems comprising nitrogen oxide sensors, temperature sensors, differential pressure sensors, oxygen sensors, particulate matter sensors, and urea-SCR systems; and wheel speed sensors. In addition, the company develops green energy products, such as portable fuel cell system, which uses hydrogen energy; and power generator that changes liquefied petroleum gas into hydrogen gas and converts it into electricity. Sejong Industrial Co., Ltd. was founded in 1976 and is based in Ulsan, South Korea.