In March 2007, China Mobile built their own "TD Trial Commercial Use" networks in 8 cities, namely Beijing, Shanghai, Tianjin, Shenyang, Qinghuangdao, Xiamen, Guangzhou and Shenzhen, marking substantial progress in the development of TD in China. In addition, China Telecom and China Netcom will also extend the capacity of their TD network in Baoding and Qingdao. The two operators may inject one billion Yuan respectively.