China Widens Anti-Graft Drive as Three PetroChina Managers Quit

China Widens Anti-Graft Drive as Three PetroChina Managers Quit

Jerome Favre/Bloomberg

The probes at PetroChina Co. come amid a wider crackdown by China’s top leadership against official corruption that President Xi Jinping, who assumed power in March, has said threatens the communist party’s grip on power.