SJM Co., Ltd. engages in the manufacture of automotive parts. It operates through Automotive and Plant business divisions. The Automotive business division manufactures and sells flexible coupling, an automobile part that is installed in the front of the automobile exhaust system to absorb noise and vibration from the engine and vibration from the road surface. The Plant business division offers expansion joint, a pipe fitting product for construction and plants used to solve fatigue destruction caused by thermal displacement and vibration that occur during the operation of various industrial systems. The company was founded on March 31, 1975 and is headquartered in Ansan-si, South Korea.