Kookmin Bank, Woori Bank, Korea Exchange Bank, Citi Bank, Green Cross Life Insurance, Industrial Bank of Korea, Jeonbuk Bank, HSBC, Lina Life Insurance, Woori Investment and Securities, Hyundai Securities, Hankook Investment and Securities, Hanhwa Securities, Kwangju Bank, Hana Bank, Hana Card, NH Securities, Eugene Investment and Securities, Leading Investment and Securities, IBK Securities, Hana Card, Nonghyup, Dongyang Life Insurance.
Financial Supervisory Service, The Korean Intellectual Property Office, Korea Electric Power Corporation, Korea Railroad Corporation, KBS,
Chusun Ilbo Co., Korea Credit Guarantee Fund, Sports Chosun, Korea Express Highway Cooperation., Koscom, Yangcheon-gu office, Geumcheon-gu office, Changwon city hall, Cisco Korea, Korea Amway, Basf Korea, SK Telecom, NCsoft, LG Electronics(overseas), Samsung SDS, etc.
Korea Air line, Asiana Airline, Singapore Airline, ANA, CPA
KT, SK C&C, Microsoft Korea, HP Korea, GM Daewoo, NHN, Yahoo Korea, FedEx, EMC
Korea Home Shopping, 39 Home Shopping, Hyundae Home Shopping, Hyundae Oil Bank, ClubMed, YES24, Hilton Hotel, Sale Korea Net, METANET, W Hotel, Ajou University Hospital, Visang, Yongpyong Resort, Muju Resort, Hana Tour, Mode Tour, Sinsygye Department store, Korea Child Fund. etc.