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UL/En/Ei Tested Intumescent Fire Seal Fire Door Seal
2025-04-13
introduction 4530
BY-NFS2020
Expandable Graphite
Fire Widows and Doors
15-30 Times
Soundproof Smoke and Fire Prevention
25m/Roll
2000m
BY
25m/Roll
20x2.0mm
Zhejiang
392690
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