- 16
- 5月
as commercial metal door with window,commercial exterior steel doors and frames,high speed metal doors
The interior of the steel fireproof door leaf is filled with new environment-friendly flame retardant and thermal insulation materials. The junction between the door leaf and the door frame and the perimeter of the fireproof glass are treated with fireproof sealing, which greatly enhances the fireproof performance of the fireproof door.
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