The annealing furnace is a type of furnace that is used for heat treatment processes such as annealing, tempering, and normalizing. It is commonly used in the manufacturing of steel, glass, and ceramics. In the annealing furnace, ceramic fiber boards, blankets, and modules are often used due to their excellent insulation properties. These materials are easy to install and provide energy savings due to their high thermal efficiency. Overall, the use of ceramic fiber products in the annealing furnace helps to improve the quality of the heat treatment process while reducing energy consumption.