Is it true or not that gas film buildings can prevent fire? Is it reliable to build gas film in coal mine closed engineering?

Pay attention to the gas film fireproof performance of Bodway. First, Bodwell has fireproof materials to ensure the safety of membrane materials below 7m; Secondly, if the B 1 grade flame retardant material melts, the smoke exhaust skylight will be formed at the melting part due to the positive pressure in the film; Third, the gas film space constructed by Bodwell's patented technology can store smoke, and the smoke drops slowly. Hot flue gas has the function of supporting gas film, which can be used for evacuation time to ensure the safety of firefighters. . .