Aluminum plates, also known as ceramic fiber hard board, is a new type of lightweight refractory material, the material has a light weight, high temperature, good thermal stability, low thermal conductivity, heat capacity is small, good resistance to mechanical vibration, low thermal expansion, and good thermal insulation properties, special processing, can be made of aluminum silicate fiber, aluminum silicate fiber felt, ceramic fiber rope, ceramic fiber blankets and other products. New sealing material having low thermal conductivity, high temperature, light weight, long life, tensile strength, flexibility, non-toxic and other characteristics of the new materials to replace asbestos, widely used in metallurgy, electric power, machinery, chemical industry thermal equipment Insulation on. Ceramic fiber hardboard, block fire board; is made of ceramic fiber cotton plus some binders with a special refining process, product texture vertical hard, good toughness and strength and has excellent wind resistance. Ceramic fiber hardboard, block fire board; is made of ceramic fiber cotton plus some binders with a special refining process, product texture vertical hard, good toughness and strength and has excellent wind resistance.