The bottom business uses a gas tank, and the fire department will definitely check it. Commercial gas appliances or gas equipment shall not be set in the following places, such as air conditioning room, ventilation room, computer room, power distribution room, inflammable and explosive goods warehouse, places with strong corrosive substances, etc. Liquefied natural gas cylinders, compressed natural gas cylinders and liquefied petroleum gas cylinders should not be installed in the kitchens of public dining areas and large and medium-sized shops. The service life of the connecting hose between commercial gas appliances and gas pipelines should not be less than that of gas appliances. The connecting hose of gas appliance should not pass through the wall, doors and windows, ceiling and ground, and the length should not be more than 2.0m, and there should be no joint.