TOM Group Limited, an investment holding company, operates as a technology and media company in Hong Kong, Mainland China, Taiwan, and other Asian countries. It operates through five segments: E-Commerce Group, Mobile Internet Group, Social Network Group, Publishing Group, and Advertising Group. The E-Commerce Group segment provides services to users using the mobile and internet-based marketplace; and technical services for e-commerce/retail operations. Its Mobile Internet Group segment offers mobile Internet services, online advertising services, and commercial enterprise solutions. The Social Network Group segment provides services of online community and social networking websites, and related online advertising. Its Publishing Group segment is involved in the magazine and book publishing, and circulation activities; and sale of advertising and other related products. The Advertising Group segment provides media sales, and event production and marketing services. The company also holds trademarks and domain names; and provides Internet content, e-mail, and telecom value-added services. In addition, it is involved in the development of software, electronics, and computer network systems; publishes, distributes, and retails books and magazines; and event management and media buying businesses. The company was formerly known as TOM.COM LIMITED and changed its name to TOM Group Limited in 2004. TOM Group Limited was incorporated in 1999 and is headquartered in Wan Chai, Hong Kong.