Principle:
The compressed gas released by the fire extinguisher will exert downward pressure on the extinguishing agent.
How to use:
Step 1: "lift". After lifting the fire extinguisher, shake it upside down to loosen the dry powder.
Step 2: "pull". Pull out the safety pin.
Step 3: "aim". Align the flame root.
Step 4: "spray". Press down on the valve and aim at the flame jet.
![broken image](http://custom-images.strikinglycdn.com/res/hrscywv4p/image/upload/c_limit,fl_lossy,h_9000,w_1200,f_auto,q_auto/7554224/571484_915723.jpeg)