TOM Group Limited is an investment holding company that operates as a technology and media company in Hong Kong, Mainland China, Taiwan, and other Asian countries. It has four segments: E-Commerce Group, Mobile Internet Group, Publishing Group, and Advertising Group. The E-Commerce Group provides mobile and internet-based marketplace services and technical services for e-commerce and supply chain operations. The Mobile Internet Group offers mobile Internet services and commercial enterprise solutions. The Publishing Group engages in magazine and book publishing, circulation, and the sale of advertising and related products. The Advertising Group provides media sales and marketing services. The company also holds trademarks and domain names and provides Internet content, e-mail, and telecom value-added services. It owns and operates a mobile and internet-based e-marketplace, and is involved in email services, telecom value-added services, and software, electronics, and computer network system development and enterprise solutions. Formerly known as TOM.COM LIMITED, it changed its name to TOM Group Limited in 2004. Incorporated in 1999, it is headquartered in Wan Chai, Hong Kong.