High rate of fire expansion seal series is the latest generation of German technology research and development of a new generation of fire blocking products. In case of fire, it can quickly expand to more than 30 times the original volume when it is hot and not fly away. It can completely fill the fire-resistant windows, all the gaps of fire doors, fire prevention, smoke prevention, antivirus, several times of ordinary fireproof seal products, and fireproof windows. The use of fire doors thus forms a strong protective barrier, instantly creating an independent safe space, providing sufficient rescue time of 90 minutes or more in the event of a fire, calmly facing danger and ensuring personal safety.