The fume emission, canteen wastewater and noise are required to be detected by the Environmental Protection Agency, and the general time is at the time of environmental assessment acceptance and annual inspection before the opening of the canteen. For example, according to GB_18483-2111 standards for cooking fume emission, it is inspected once a year, but the Environmental Protection Bureau does not necessarily need to inspect the canteen every year, and it will probably notify in advance. Third-party testing institutions will be recommended when testing, and CMA qualification is required. For example, Zhongke Huahang 88931391