The long-term use temperature of quartz products can reach 1200 ° C, and the softening point temperature is 1600-1700 ° C, which is affected by the impurity content in quartz fiber products, and there will be a certain deviation. 

It has excellent high temperature resistance, ablation resistance, heat insulation performance, low thermal expansion coefficient, and good thermal shock resistance, low thermal conductivity. Its dielectric number and dielectric loss are the best in all mineral fibers, and it can still maintain excellent dielectric properties at high frequency, high speed and high temperature, so it is widely used in aerospace, aviation, electronic information, high temperature insulation, high temperature filtration and other aspects.