• The invention discloses an exhaust air duct cleaning system, which comprises an exhaust air duct, a dust collecting device, and a collecting device.

    发明公开了一种排气风管清洁系统清洁系统包含排气风管、装置以及收集装置。

    youdao

  • The utility model relates to an exhaust duct that prevents head wind, especially to a movable air discharging door type one-way air exhaust device.

    实用新型涉及逆风排风管特别是涉及活动排风门单向 排风装置。

    youdao

  • The utility model relates to an exhaust duct that prevents head wind, especially to a movable air discharging door type one-way air exhaust device.

    实用新型涉及逆风排风管特别是涉及活动排风门单向 排风装置。

    youdao

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