Zirconia fiber paper is a high-temperature resistant flexible fiber product. Zirconia fiber paper is made of ultra-fine zirconium oxide fiber cotton and is made by special paper machine papermaking technology. Huolong zirconia fiber paper is resistant to high temperatures, does not burn when exposed to fire, and is smokeless. It is also called "flame-retardant insulation paper" or "smokeless insulation paper" and "ultra-thin refractory paper". It has low thermal conductivity, low vacuum degassing rate, good uniformity, and a wide range of working temperature applications.

Zirconia fiber paper is a polycrystalline refractory fiber product made of yttrium-stabilized zirconium oxide, mainly tetragonal + cubic, with a melting point of more than 2700℃. The product has been sintered at ultra-high temperatures, has good high-temperature dimensional stability, and can be used in high-temperature environments of 1200℃. There may be discoloration under high-temperature vacuum or other atmospheres, which does not affect the insulation effect.