Our polycrystalline fiber board is a top - notch refractory material. With a maximum working temperature of 1750 degrees, it is ideal for various high - temperature industries. It can be used in combination with silicon - molybdenum rods and silicon - carbon rods in high - temperature electric furnaces. Its excellent thermal insulation properties not only save energy but also ensure the stability of the high - temperature environment in the furnace. In the metallurgy, ceramics, glass, and chemical industries, our polycrystalline fiber board has been widely recognized for its durability and high - temperature resistance.