Ceramic fibers are categorized based on their composition and manufacturing processes, leading to differences in properties such as heat resistance, flexibility, and strength. Alumina-silicate fibers are cost-effective and widely used in insulation. Alumina-zirconia fibers offer higher strength and creep resistance, suitable for high-temperature applications. Silicon carbide fibers are known for their excellent thermal stability and high-temperature strength, used in aerospace and automotive industries. Nextel fibers, made from alumina and silica, provide high tensile strength and are used in fire-resistant textiles. Each type of ceramic fiber has specific applications based on their unique properties, making them suitable for different industrial needs.