20 minute glass door,internal fireproof glass doors,fire rated sliding glass hatch

Principle of fire glass door: after high temperature, the transparent jelly fire glue layer in the middle of the glass will quickly harden, forming an opaque fire heat insulation plate.

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20 minute glass door,internal fireproof glass doors,fire rated sliding glass hatch-ZTFIRE دروازہ- فائر ڈور، فائر پروف ڈور، فائر ریٹیڈ ڈور، فائر ریزسٹنٹ ڈور، سٹیل ڈور، میٹل ڈور، ایگزٹ ڈور