Won-Lak Son

KyungDong One Co., Ltd. engages in the manufacture and sale of electronic components, refractories, construction materials and non-metallic mineral products. It operates through the Caretech, and Network business division. The Caretech business division offers insulation materials, spray-applied fire resistive materials, thermal insulation materials, cryogenic insulation materials, cryogenic insulation engineering, fillers, filter aids, plastic components and others. The Network business division offers network wall pads and video phones. The company was founded in February 1982 and is headquartered in Seoul, South Korea.

KyungDong Co., Ltd. engages in the mining industry. It operates through the following business divisions: Coal, Biomass, Oversea Resource Development, and Mining Machinery Manufacturing. The company was founded on February 1, 1974 and is headquartered in Seongnam-si, South Korea.

KyungDong Holdings Co., Ltd. operates as a holding company with interest in financial activities. The company was founded on November 1, 2002 and is headquartered in Yangsan-si, South Korea.