It doesn't belong to

The State Environmental Protection Administration strictly requires the environmental protection bureaus (offices) of all provinces, municipalities, autonomous regions and municipalities directly under the Central Government and the environmental protection bureaus of key environmental protection cities to include the problem of oil fume pollution in the normal environmental management scope; Unorganized emission of lampblack pollution sources is strictly prohibited, and ventilation facilities and purification devices should be installed forcibly if there is no ventilation equipment and purification device.

The standard stipulates that the maximum allowable emission concentration is 2.1mg/m_, and hotels with more than six hoods belong to large-scale catering enterprises, and the minimum removal rate of oil fume is ≥85%.