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  • 电动防火阀70℃/280℃常开防火3C防火阀镀锌调节阀排烟

    Electric Fire Damper 70℃/280℃ Normally Ope...

    Product Description Electric Fire Damper 70℃/280℃ Normally Open Fire 3C Fire Damper Galvanized Regulating Valve Smoke Exhaust 70℃ fire damper: 主要安装在通风、空调系统的送风、回风管道上. 正常情况下, the valve is in the open state to ensure the normal operation of the ventilation and air