Refractory polycrystalline fiber module is a type of module component product produced mainly with polycrystalline alumina fiber blanket. It adopts a hanging anchor method and can meet the working requirements of 1300℃-1600℃ high temperature all-fiber furnace lining. It is an important material used in various heat treatment and high-temperature processing processes. It has excellent heat resistance and thermal conductivity. Widely used in fields such as high-temperature insulation, chimney and flue insulation. It has good high temperature stability, good surface adhesion, and long service life.