Excellent Structural Design:The structure of the rocket stove achieves a chimney effect by allowing hot air to rise and sucking in more cold air at the bottom, improving combustion efficiency and making the fire more powerful! High Quality:The rocket stove is made of 0.072 thick Q235 steel, which does not deform even at temperatures over 1500°F, with a stable structure and a load capacity of over 130 pounds at the top, making it very durable. The surface of the rocket stove is sprayed with a high temperature resistant fireproof finish that will not peel even at temperatures exceeding 1500 degrees Fahrenheit.