Since its establishment in 1998, Tencent has maintained steady growth under its user-oriented operating strategies. It provides value-added internet, mobile and telecom services, as well as online advertising under the strategic goal of providing users with "one-stop online lifestyle services." Tencent’s leading internet platforms in China – QQ (QQ Instant Messenger), WeChat, QQ.com, QQ Games, Qzone, 3g.QQ.com, SoSo, PaiPai, and Tenpay – aim to address the various needs of internet users, including communication, information, entertainment, e-commerce, and others. With its R&D staff comprising more than 60% of its employee base, Tencent has obtained patents relating to technologies in various areas such as instant messaging, e-commerce, online payment services, search engine, information security, gaming, and many more. In 2007, Tencent invested more than RMB100 million in setting up the Tencent Research Institute, China's first internet research institute, with campuses in Beijing, Shanghai, and Shenzhen. The institute focuses on the self-development of core internet technologies in pursuing its development and innovation goals for the industry.