Yesco Holdings Co., Ltd. engages in the supply of city gas. It also offers gas equipment, tank terminals, air-conditioning and heating equipment, CNG chargers, gas equipment, and water treatment construction solutions, as well as biogas. It supplies LNG to 1.14 million households in the Seoul metropolitan area. The company also produces and sells precast concrete; and engages in housing design and wood processing activities. The company was founded in 1981 and is headquartered in Seoul, South Korea.