Ceramic fiber board and ceramic fiber blanket are both high-temperature insulation materials with different properties. Ceramic fiber board is rigid and provides better mechanical strength, making it suitable for applications requiring structural support. It typically has a higher cost due to its manufacturing process and rigidity. Ceramic fiber blanket, on the other hand, is flexible and easier to install, but it may not offer the same level of mechanical strength. It is generally less expensive because it is less dense and easier to produce. In terms of performance, the choice between board and blanket depends on the specific application requirements for strength, flexibility, and thermal insulation. Cost-wise, blanket is often more cost-effective, but the board may be necessary for certain applications where its superior strength is required.