China's State Administration of Radio, Film, and Television announced in mid-July that it will permit investments of private capital to help the country's trial units bring about a complete conversion to the digital cable TV system. The policy will allow private investors to take part in the conversion and promotional activities. However, restrictions are set to keep non-public investors' shares of the trial units under 49% and to restrain them from participating in the remaking of the domestic network backbone. Currently, 49 areas, inclusive of Beijing, Shanghai, Hangzhou, Qingdao, are under trials to implement complete the switch to digital cable TV.