TONGYANG, Inc. engages in the provision of construction and building materials. It operates through the following divisions: Construction Material, Construction, Plant, and Fabric. The Contruction Material division provides ready mixed concrete to be delivered construction sites. Contruction division offers buildings, roads, ports, and other construction services. Plant division provides engineering, procurement, and construction serivces of power plants. The Fabric divison offers span bond and acrylic yarns. The company was founded on August 25, 1955 and is headquartered in Seoul, South Korea.