security product users, representing a user penetration rate of 83.9% in China. Its Internet and mobile security products include 360 Safe Guard and 360 Anti-virus, the Internet security products in China, with 301 million and 248 million monthly active users in January 2011, and 360 Mobile Safe, the mobile security product in China. The Company generates revenues primarily through offering the services, such as online advertising and Internet value-added services. Online advertising offers advertising services by providing marketing opportunities on its Websites and secure platform products to its advertising customers.