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elevator smoke blocking curtain

These are related to the elevator smoke blocking curtain news, in which you can learn about the latest trends in elevator smoke blocking curtain and related information industry, to help you better understand and expand elevator smoke blocking curtain market.
  • The basic function of smoke curtain
    The basic function of smoke curtain
    What is the basic funtions of smoke curtain?1-Manually control the upward, downward and stop functions of the smoke curtain2.Automatically working:a. When the smoke curtain controller receiveds the action signal of the smoke sensor, it will automatically descend to it's working position.b .When t
    2022-10-17
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