According to a republished report on Xinhua, "The first round of the anticorruption inspections in 2015 will target 26 State-Owned Enterprises (SOEs)."
"On [March 1], the Central inspection teams arrived at 20 SOEs." These SOEs included China National Petroleum Corporation, China National Offshore Oil Corporation, China Power Investment Corporation, China Telecom Corporation, China Mobile Communications Corporation, and Baosteel Group, among others.
The inspection team will stay at the SOEs for two months (from February 28 to April 29). Its main task is to collect and review public reports on "issues about top leaders, their subordinates, and managers in key positions."
Source: Xinhua, March 2, 2015