Yong-Cheol Yoon

University of Washington functions as a College/University. The company is headquartered in Seattle, WA.

SK Ecoplant Co. Ltd. is a holding company, which offers civil engineering and construction services. The company operates in the following business areas: Housing, Architecture, Infrastructure, Chemical Plant, Power Plants and Ubiquitous Business (u-Business). Its services include construction of residential, commercial, cultural buildings, petrochemical and power plants, roads, bridges and information technology infrastructures and plant engineering. The company was founded on February 21, 1962 and is headquartered in Seoul, South Korea.

SK Telink Corp. engages in the provision of VoIP services. Its services include international calling, corporate number information services, and SK 7mobile phones. The company was founded on April 9, 1998 and is headquartered in Seoul, South Korea.

Hansung Line Co., Ltd. provides oceangoing foreign freight transport services. The private company is based in Seoul, South Korea. The South Korean company was founded in 2003. The CEO is Hyun-Cheol Ku.

ADT Caps Co., Ltd. is a South Korean company that focuses on sustainable technology to ensure safety. The company is based in Seoul, South Korea. and has subsidiaries in South Korea. The company was founded in 1971. The CEO is Jin-Hyo Park.

Part of Citigroup, Inc., F & U Credit Information Co., Ltd. is a South Korean company that operates a credit investigation and collection agency. The private company was founded in 1998.

ID Quantique SA develops and commercializes network encryption, scientific instrumentation, and random number generator products. The firm’s products include Cerberis solution, a quantum network encryption product to secure point-to-point backbone and storage networks; and Centauris solution, a conventional network encryption product that integrates into the existing network infrastructures for point-to-point and multi-point encryption. Its products are used to secure Ethernet, fiber channel, ATM, and SONET/SDH data networks in financial, government, and defense sectors. The company was founded by Gregoire Ribordy and Nicolas Gisin in 2001 and is headquartered in Geneva, Switzerland.

Maso Interactive Corp. engages in the publishing of professional IT magazines. It provides information on programming and information technology industries. The company was founded in 1983 and is headquartered in Seoul, South Korea.

Life & Security Holdings Co.,Ltd. engages in the holding business that dominates the business of the subsidiary through equity ownership. The company was founded on March 21, 2014 and is headquartered in Incheon, South Korea.

Part of SK Telecom Co., Ltd., Service Ace Co., Ltd. is a South Korean company founded in 2010. The private company provides various services such as mobile subscriptions, internet/iptv security, and talent recruitment. Service Ace Co., Ltd. also supports various welfare programs for its employees to ensure a stable and happy life. The company has received several awards and certifications, including the NCSI National Customer Satisfaction Index No. 1 for 23 consecutive years and the 2020 Family-Friendly Company Certification. Service Ace Co., Ltd. emphasizes ethical management and personal information protection, and its retention period for ethical management reports has been changed to three years.

Part of SK Telecom Co., Ltd., Service Top Co., Ltd. is a South Korean company that provides telemarketing and call center services. The private company was founded in 2013.

Part of SK Telecom Co., Ltd., SK Telecom Americas is a venture investment and corporate development arm of SK Telecom, the largest telecommunications company in South Korea. The private company is based in Sunnyvale, CA. SK Telecom Americas actively pursues collaborative opportunities with leaders and innovators in ICT. The company seeks to strengthen its competitiveness through differentiated, immersive hyper-experience in commerce, next-generation media, cloud gaming, esports, and much more. SK Telecom Americas' core activities focus on advancing growth opportunities for SK Telecom via acquisition, investment, and partnerships. The company's portfolio comprises leading-edge companies that are developing innovative, highly differentiated, and defensible technologies across a wide variety of markets, and that are aligned with SK Telecom's strategic vision.