The flue is the infrastructure of the kitchen, very easy to hide dirt, is the dead end of cleaning. At the same time the flue is the fire, health, epidemic prevention department inspection of the key areas. At the same time, the inside wall of the fume hood is easy to parasitic rats, cockroaches, does not meet the health standards. Greasy gelatinous material long-term raking attached to the metal surface, but also corrosion of metal materials, shortening the life of the flue.

Residents of the exhaust pipe for domestic exhaust pipe, maintenance and use by the residents are responsible for and have the right. And the fume pipe of food and beverage catering belongs to the commercial application.