Must industrial buildings have skylights for lighting and smoke exhaust?

First of all, there is no need to make it clear to you. You have two problems, one is lighting and the other is smoke exhaust.

1, the lighting problem is not a civil building, and there is no mandatory requirement for lighting. For example, some clean factories require no windows. Daylighting is the owner's own demand. Without affecting the process, lighting is definitely more energy-saving.

2. Smoke extraction: firstly, see whether it is necessary to set up a smoke extraction workshop according to the specifications, specifically according to the fire code. If you want to set up smoke extraction, you can also solve it by using high windows and mechanical smoke exhaust fans that can be opened on the side. , is not necessarily a smoke skylight.