Lee's PR and Research
- Conducts market research, project design and management, research, computer programming, consultation, fieldwork, and data analysis.
- http://www.leespr.co.kr/

HPR & Company
- A public relations consultancy firm focusing on public communications, media service, event marketing, advert art design, management-labor relations, and localization.
- http://www.hprco.com/

Hankook Research Co., Ltd.
- Performs marketing consultation work, consumer research, and marketing information systems.
- http://www.hrc.co.kr/

Event We
- Offers public relations,promotional events, and advertising. Based in Seoul.
- http://www.eventwe.com/

Diamond Ad Ltd.
- Korean advertising agency page with company overview, finance, clients, and awards received.
- http://www.diamond.co.kr/

Dadam Design Associates, Inc.
- Product design consultancy located in Seoul.
- http://www.dadam.com/