Fire exits are the main ones. You can't block the retreat. A fire extinguisher is an indispensable item. A 30-square-meter storefront must have at least two fire extinguishers.
Fire extinguishers must be placed in obvious places. If there is a fire, it must be dealt with immediately. Get a fire extinguisher. Another is that there can't be open flames in the store.
To open a snack bar, you need to apply for a catering service license, business license and tax registration certificate.
Ask the landlord's copy of the real estate license to see if the store's house use is "commercial and residential". It's best to go to the industrial and commercial department in person to consult whether this store can apply for a business license, because it is very troublesome to apply for a business license for a house in a residential area, and what "live-to-business" procedures should be handled. Then apply for a business license.