Belongs. Jianliyuan Catering is a state-owned enterprise belonging to China National Petroleum Corporation (CNPC). As one of China's largest energy companies, PetroChina operates in a variety of fields, including oil and gas exploration, production, sales, and related areas such as petrochemicals and natural gas pipelines. As its subsidiary, Jianliyuan Catering also falls under the category of state-owned enterprises (SOEs). SOE refers to state-owned enterprises, which are wholly owned or controlled by the state or state organs.