aluminum window 1water & air tightness aluminum window 2wind resistance aluminum window 3corrosion resistance aluminum window Swing Aluminum Window 1.Easily opened, tightly closed, easy operation2.Wind pressure resistance: Third class (GB/T7106) 3.Air permeation resistance: Third class (GB/T7108) 4.High quality profile, various glass available, elegant design, size as per customer's requirement 5 ...
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