1. Radiation reflectivity: can reflect more than 90% of radiant heat. 2. Resistance to radiant heat: 300 ºC heat radiation is more than 1 hour, 500 ºC heat radiation is more than 30 minutes, instantaneously close to the maximum heat radiation of 1200 ºC, can also be radiant heat flux (about 1000-1500 ºC distance from the flameLess than 5 meters) to carry out rescue operations. 3. Flame retardant performance: damage length ≤1cm, continuous burning time ≤1s, smoldering time ≤2s. 4. Tear strength: ≥32N. 5. Breaking strength: ≥450N. 6. Folding resistance: After 8000 windings, no cracks will appear on the surface.