Oil smoke pollution is the health of the "invisible killer", is invisible harmful substances, the urban atmospheric environment caused by a great deal of harm, but also the residents of the key object of complaint.

Large-scale catering enterprises have perfect oil smoke purification facilities, so they are not the makers of oil smoke pollution. Complaints are more concentrated is the open-air barbecue and small restaurants, especially in summer, barbecue beer crayfish, a peak in the evening fumes will be flying all over the sky.

According to the results of a study by the Chinese Academy of Sciences, in addition to the large amount of PM2.5 contained in restaurant fumes, there are smaller particles PM1, which are harmful to the human body. According to Article 18 of China's Pollution Prevention and Control of Atmosphere Law, pollutants discharged into the atmosphere should comply with air pollutant emission standards. All food and beverage establishments must install grease and smoke purification equipment for food and beverage grease and smoke purification. Catering operators, catering units that will produce oil smoke are required to install.

So, small catering establishments are also required to install fume purifiers