The core material is made of basalt and other natural ore as the main raw material, melted into fiber at high temperature, added with appropriate amount of binder, and solidified and processed. It is a new type of fireproof board with the strongest fire resistance in the same type (sand sandwich panel series). The product is suitable for drying room, paint room, industrial equipment, building, ship insulation, sound insulation, etc., and is suitable for electronic clean room, clean room, explosion-proof fireproof workshop ceiling, partition and so on. Through the national testing center fire resistance limit detection. The fire resistance time is 80 minutes. The thickness of this product can be made into 50-150mm, which can be customized according to customer requirements.