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- Jan
security doors 820,9 foot doors interior,ul safety doors
The fire resistance time of UL fire door is not less than 120 minutes, which greatly guarantees the safety of personnel and property within the time required by the standard. UL fire door type has single, double. To meet the requirements of fire resistance stability, integrity and heat insulation in a certain period of time.
UL safety doors,seuneu dipeunteun panto najong plat,security doors 820,9 foot doors interior,
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