According to the prompt of Beijing Fire Bureau, the kitchen flue should be cleaned at least once every 61 days after catering. It is recommended that customers arrange the cleaning times for flue cleaning according to their actual situation.

standard for cleaning oil fume pipes: after cleaning the exhaust hood, more than 95% can see stainless steel, and there is no sludge or oil stain. After cleaning, more than 91% of the inner wall of the smoke exhaust horizontal pipeline has no massive oil dirt. After the purifier is cleaned, it can be seen that the primer is free of massive grease. Tianruijie flue cleaning mainly cleans smoke exhaust hood, grate, fan, purifier, pipeline and water windmill.