Anhui Yifeng Petrochemical is not an oil refinery. Anhui Yifeng Petrochemical is not a state-owned enterprise, but a private enterprise. It was established on 2020-09-01 and is located in Dongzhi Economic Development Zone, Anhui. The main industrial chain is "carbon four deep processing" and develops a circular economy. The main products are MTBE and isooctane. , n-butane, propane, and liquefied petroleum are chemical plants, not oil refinery plants.