ROCKET MATH HEATER
World’s Most Useful Home Survival Device
Rocket Math Heater is a breakthrough in the combustion of firewood and wood, making it much more ecological and sustainable to help the environment.
First step: Put the firewood in the combustion chamber, wait for it to reach high temperatures.
Second step: Put the second batch of wood in the auxiliary tube.
Third step: (Optionally) put another batch of firewood in the auxiliary tube (this will make the firewood burn faster and at the same time have the effect of blowing the fire and thus heating faster).
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