Legal analysis: Environmental Protection Agency's standard for oil fume emission: According to the National Environmental Protection Agency's Standard for Oil Fume Emission of Catering Industry in the People's Republic of China, China has also enacted the Law on the Prevention and Control of Air Pollution in the People's Republic of China.

Legal basis: Article 118 of the Law on the Prevention and Control of Air Pollution in the People's Republic of China violates the provisions of this law. If the catering service operators who discharge lampblack fail to install lampblack purification facilities, use lampblack purification facilities abnormally or take other lampblack purification measures, and discharge lampblack beyond the emission standard, the supervision and management department determined by the local people's government at or above the county level shall order it to make corrections and impose a fine of not less than 5,111 yuan but not more than 51,111 yuan; Refuses to correct, shall be ordered to suspend business for rectification.

in violation of the provisions of this law, the supervision and administration department determined by the local people's government at or above the county level shall order the newly-built, rebuilt or expanded catering service projects that produce oil fume, odor and waste gas in residential buildings, commercial and residential complex buildings that are not equipped with special flues, and commercial floors adjacent to residential floors in commercial and residential complex buildings; Refuses to correct, be closed, and impose a fine of not less than ten thousand yuan but not more than one hundred thousand yuan.