According to the national standard, the gasoline sold by all gas stations in China must meet the national standard, and can only be marketed after passing the quality inspection. As a big city, Hefei's gasoline quality at its gas stations is also guaranteed. Moreover, China Petrochemical, China Petroleum and other large oil companies have sales outlets in Hefei, and the gasoline quality of these companies is also guaranteed. So all the gasoline sold in Hefei can be used.
Although the gasoline sold in Hefei can be used, it is still necessary to choose a regular gas station to refuel and avoid buying inferior oil from street vendors.