WDMA Noise Reduction Window - noise reduction soundproof glass aluminum profile sliding windows 36X60 magic-5{box-sizing:content-box}#detail_decorate_root

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A: We have standard management on factory based on ISO system

(2)sound insulation

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WDMA Noise Reduction Window - noise reduction soundproof glass aluminum profile sliding windows 36X60 magic-5{box-sizing:content-box}#detail_decorate_rootType single double glass aluminum thermal broken frame window Style Sliding, Double Hung, Swing(Casement), Fixed, Arch, Tilt and turn, Awning, Louver, circle and etc. Color Green, coffee, black, white, grey and etc. Hardware Chinese famous brand, top quality profile brand, CONCH or SHIDE U Form Galvanized Steel Liner 1. 2mm,1. 5 mm, 2. 0mm Thickness of main frame and leaf 1. 8mm,2. 2 mm,2. 2mm,2. 5mm Glass Float glass, low e glass, tinted glass,