Telecommunications in China pie charts). China's number of Internet users or netizens topped 137 million by the end of 2006, an increase of 23.4% from a year before and 162 million by June 2007, making China the second largest Internet user after the United States. The latest figure (December 2011) have China's internet users exceeding 513 million making it the largest internet user in the world. As of 2004, the largest concentration of Internet users were from Guangdong, Zhejiang, Fujian, Jiangsu, Liaoning, Shandong and Hubei provinces. Beijing, Shanghai and Tianjin also had a high concentration of Internet users, with 28% of Beijing's population
Telecommunications in China international fiber-optic links include those to Japan, South Korea, Hong Kong, Russia, and Germany. Fixed and mobile operators in China include China Mobile, China Netcom, China TieTong, China Satcom (former), China Telecom and China Unicom. In 2014 only 3 countries (China, US, Japan) host 50 % of the globally installed telecommunication bandwidth potential. China replaced the U.S. in its global leadership in terms of installed bandwidth in 2011. By 2014, China hosts more than twice as much national bandwidth potential than the U.S., the historical leader in terms of installed telecommunication bandwidth (29% versus 13% of the global total) (see