Method for transform small fire extinguisher tank into gas tank

1. Pour dry powder out of the small fire extinguisher tank and clean it thoroughly.

2. Pour out the liquefied gas in the liquefied gas tank and clean it thoroughly.

3. Connect the small fire extinguisher tank with the liquefied gas tank and seal the joint with adhesive tape.

4. Put the connected small fire extinguisher tank and liquefied gas tank into a large container, and add water to the large container.

5. Seal the big container, put the big container into a bigger container, and add water to the big container.

6. Put the big container into the microwave oven for heating, and let the small fire extinguisher tank and liquefied gas tank expand when heated.

7. Small fire extinguisher tanks and liquefied gas tanks can be used after cooling.