The fresh air ventilator is an important equipment of air's quality regulating.
新风换气机是调节空气品质的重要设备，换热器是新风换气机的关键部件。
The invention discloses an environment protective type double air duct ventilator.
本发明公开了一种环保型双风道吸油烟机。
The invention discloses an environment protective type double air duct ventilator.
本发明公开了一种环保型双风道吸油烟机。
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