3-hour C-class nano-silica composite fire-resistant glassOur self-developed high-performance fire-resistant building materials have passed the national fire certification (with fire resistance integrity for 3 hours). The product utilizes a nano-silica composite interlayer technology, effectively blocking flame penetration at 1000℃ temperatures while inhibiting the spread of toxic smoke, with a thermal conductivity coefficient of less than 0.23W/(m·K). It offers over 92% light transmittance and 5J/cm² impact resistance, meeting architectural lighting needs while also providing valuable time for emergency evacuation. Suitable for fire compartments in office buildings, refuge rooms in hospitals, and safe corridors in shopping malls, it has been successfully applied in benchmark projects such as Beijing Daxing International Airport and is an optimal material for smart fire protection systems.