STX Engine Co., Ltd. manufactures and sells diesel engines and electronic communication devices in South Korea. It operates through the Civil Business, Special Business, and Electronic Communication segments, offering marine and industrial engines, electrical and electronic components, and power generation facilities. The company also sells engine parts and provides servicing for parts and components, serving the shipyard and defense sectors. Formerly known as STX Corporation, it changed its name to STX Engine Co., Ltd. in April 2004, was founded in 1976, and is headquartered in Changwon-si, South Korea. It is a subsidiary of UAMCO., Ltd.