LVDUN 96x80 circular aluminum windows For Sale color:Brown the ventilation rate of the

the ventilation rate of the parallel opening windows is better than that of the outer-awning windows

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LVDUN 96x80 circular aluminum windows For Sale color:Brown the ventilation rate of theLVDUN 96x80 circular aluminum windows For Sale Product Description High quality imported hardware Adopting the original German hardware brand, all metal aluminum material, surface anti corrosion treatment, exquisite craftsmanship, it's secure and anti pry. High precision profile 6060 T66 high precision aluminum profile and taking into account the strength, toughness, and corrosion resistance, it has excellent performance. EPDM co extrusion strip The