There are mainly five types of glass fire doors, one is laminated composite fireproof glass, the other is wired fireproof glass, the third is special fireproof glass, the fourth is hollow fireproof glass, and the fifth is high-strength single-layer cesium potassium fireproof glass. From the classification of fire resistance performance, fireproof glass doors can be divided into three grades: 30 minutes, 60 minutes and 90 minutes.

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