8.5.3 The following places or parts of civil buildings shall be equipped with smoke exhaust facilities:

1 is set on the first, second and third floors, and the room construction area is greater than 100m? Song and dance entertainment venues, set in four or more floors, underground or semi-underground song and dance entertainment venues;

② Atrium;

3 * * * The building area in the building is greater than 100m? A room on the ground where people often stay;

4 * * * The construction area of public buildings is more than 300m? Above-ground rooms with more combustible materials;

5. Evacuation walkways with a length greater than 20m in the building.

It is reasonable to say that you don't need to set it up, mainly depending on what the shopping mall where your clothing store is located. If there are smoke exhaust facilities inside and the tuyere is in your store, it is generally required to be rebuilt.