Tae-Won Choi

SK Holdings Co., Ltd. is a holding company which engages in management of its affiliates and subsidiaries. Through its subsidiaries it operates in the fields of energy, chemicals, information technology, logistics, and services. The company was founded on October 13, 1962 and is headquartered in Seoul, South Korea.

SK C&C Co., Ltd. is engaged in the provision of information technology solutions. It operates through the following business divisions: IT Services, Security Services, Distribution, Contents and Other. The IT Services business division provides IT sourcing and systems integration. The Security Services business division supplies security solutions and services. The Distribution business division involves sale, management, lease and registration of automobiles. The Content and Other business division offers software and content development business. SK C&C was founded on April 13, 1991 and is headquartered in Seongnam, South Korea.

SK Group distributes refined oil and gas. It provides petroleum-refining services, energy products like crude oil, natural gas and refined petroleum. The firm's services are generation, transmission & distribution of electricity, natural gas and water and marketing & trading of energy commodities. The company was founded by Jong-Kun in 1953 and is located in Jongno, South Korea.