Hotels, office buildings, teaching buildings and hospitals are equipped with100 square meters every 50-1;

Department stores, exhibition buildings, libraries, postal buildings and financial buildings, every 50-80m21;

Electrical equipment rooms, at least 2 rooms per 50 square meters;

Liquefied petroleum gas and combustible gas tank farms, each with 2 tanks;

How to use a fire extinguisher:

First, check whether the working pressure range of the fire extinguisher is normal. Yellow indicates sufficient pressure, green indicates normal pressure, and red indicates undervoltage. When selecting the fire extinguisher to be used, the pressure pointer should be at least in the green area, otherwise it needs to be pressurized.

Second, in order to loosen the dry powder inside, you need to turn the fire extinguisher upside down.

Third, unplug the safety pin, pull the ring by hand, pull it out hard, and pull the safety pin off.

4. After unplugging the safety pin, hold the pressure handle with one hand and the nozzle with the other hand, and place the fire extinguisher vertically; Press the handle hard and the dry powder will be ejected from the nozzle.

5. When spraying, aim at the root of the flame and stand about 3 meters away from the root of the flame in the upwind direction to prevent the dry powder from being blown to yourself by the wind.