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Roof ventilator

Features:1.Efficientexhaustfunction2.Uniquedesignoftheadjustmentduct3.High-qualityalloybody4beautifulappearance5simpleandconvenientinstallation6.Afterinstallationwithoutanyoperationandenergy-driven

Features:
1. Efficient exhaust function
2. Unique design of the adjustment duct
3. High-quality alloy body
4 beautiful appearance
5 simple and convenient installation
6. After installation without any operation and energy-driven