The polycrystalline fiber board we offer is a versatile high - temperature material. It has a maximum working temperature of 1750 degrees. It can be used as furnace linings in high - temperature electric furnaces, and it is compatible with silicon - molybdenum rods and silicon - carbon rods. It is used in a variety of industries, such as metallurgy, ceramics, glass, and chemical industries, providing reliable high - temperature performance and excellent thermal insulation.