What are the private oil companies in China? What is the nature of China's oil industry?

The so-called oil companies in China refer to those enterprises that have the right to exploit or import and export crude oil. At present, there are five enterprises with this feature in China, namely PetroChina, Sinopec, CNOOC, China Sinochem and Shaanxi Yanchang, which are the five state-controlled oil enterprises in China. Some of the roadside brands you mentioned belong to private refined oil sales companies, some belong to branches of these five major enterprises, and some small oil refining enterprises are also private enterprises. However, whether it is a private refined oil sales enterprise or a private oil refining enterprise, its refined oil or crude oil as raw materials all come from the above five companies. Generally speaking, although the operating efficiency of these private enterprises can't be compared with that of the top five companies, the profit rate is still very high. The state's attitude towards these private enterprises is neither support nor attack. From a long-term point of view, the sale of refined oil and oil refining are both links in the oil industry. If the country can reduce the restrictions on oil enterprises in the future, it will take the lead.