What are the industries and jobs that can deal with hotels, such as making drinks, and what else?

Suppliers should be the most: drinks, dishes (including vegetarian dishes, spices, etc. ) and low-value consumables (including napkins and lighters). )

In addition, there is equipment maintenance: air conditioners, elevators, stoves or other electrical equipment (even tables and chairs need to be repaired)

Garbage collector: Collect bottles and cartons every day.

Swill collectors: Generally, they are engaged in farming.

Most institutions are related to hotels: Health Bureau, Environmental Protection Bureau, Urban Management Bureau, Public Security Bureau and so on.

Cleaning company: Generally, hotels have windows along the street, and special professionals should clean them.

Cooperation unit: Other industries will make low-cost advertisements in hotels (such as bars, KTV and so on). )

As far as I know, that's all. All by hand. I hope it can be adopted.