Dae-Duk Jung

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.

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 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.

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.

SK Communications Co., Ltd. engages in the provision of web portal search engine services. Its services include integrated search engine, instant messenger, display and searchable advertisement, contents such as Nate Search, Nate News, Nate Pann, Portal Nate App and Nate Mail. The company was founded on September 19, 1996 and is headquartered in Seoul, South Korea.