if you don't understand, don't be fooled.

First, choose a low-noise exhaust fan.

Second, the oil fume of the exhaust fan is also polluted, so we should consider letting it exhaust into the air, so as not to affect others. Including noise.

thirdly, tunnels or pipes are selected to reduce the noise of the exhaust fan.

fourth, choose the direction of the pipeline according to your characteristics, and so on.