The high expansion rate fireproof expansion sealing strip series is the latest technology of Germany Nürnberg Messe GmbH, a new generation of fire safety sealing products for fire doors and windows. In case of fire or heat, it can expand to more than 30 times of the original volume. It can completely fill all gaps of fire doors, fireproof, smokeproof, and antivirus can be several times more common fireproof sealing products. It can be combined with the use of fire doors to form strong protection. The barrier creates an independent and safe space in an instant, which can guarantee sufficient rescue time of more than 90 minutes in the event of a fire, calmly face the danger and ensure personal safety.