Fire glass refers to the special glass that can effectively prevent the spread of flames and control the fire spread when the fire occurs. The fire prevention effect is evaluated by the fire resistance. The test method is to test the fire resistance integrity and heat insulation of the glass in the standard heating curve of simulating the fire occurrence in the fire resistance test furnace, so as to determine the type and grade of the test results. Constant protection fire glass, is to choose high quality original, after the special process, with fire prevention, light weight, high strength, good weather resistance, easy processing, is constant insurance company close to the current fire glass and doors and Windows industry technology development trend, conquer the industry public technical problems, with its own technology development in high weather resistance, light, raw material economy, environmental protection and fire safety level of high performance fire glass products. Can be made into the outer curtain wall, external doors and Windows with fire glass and other various functions or requirements of the field, such as: fire floor, platform, ceiling, firewall, bulletproof fire prevention, anti-theft fire doors and Windows, fire screen wall, etc.