Is there a fire prevention requirement for the air inlet and air outlet of five-star hotels?

Yes According to the partially revised Code for Fire Protection Design of Buildings (GB500 1620 14) (version 20 18), the kitchen oil smoke exhaust pipeline in the building should be equipped with inspection ports and doors according to Article 9.3. 13 of this Code, and smoke exhaust facilities should be set up. The air inlet and air outlet of five-star hotels have fire prevention requirements.