China's thermal insulation materials rank among the top in the world.

Why is it difficult to recycle rockets? "The requirements are that it cannot burn out, it has to come back and fly again, the difficulty of reusing it far exceeds disposable materials!" Academician He Xiaodong of the Chinese Academy of Engineering pointed out the core difficulty of recycling rockets in a single sentence. When the insulation material is burned through in a furnace at over 1000 degrees Celsius, it is taken out without deforming, which is even more unbelievable, it can be picked up directly by hand! "When it's taken out, the heat inside cannot continue to dissipate, and the edges have turned black, which means that the heat has dissipated, so this material has very good insulation properties." Academician He Xiaodong said that China is at the forefront of insulation materials, reaching the top tier in the world.