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Topwindow Aluminum 4 Panels Casement Windows Aluminium Frame Casement Window With Tinted Glass on China WDMA Type:Sliding Windows the formula without lead asTopwindow Aluminum 4 Panels Casement Windows Aluminium Frame Casement Window With Tinted Glass Manufacturer&Desginer New Design Automatic Floating Float Drift Drifting Thermal Break Aluminum window Frame Tilt And Turn Aluminium Sliding Windows Structural features: 1. Adopt double guarded design, to increase the wind resistance index. 2. Use the open wood technology for splicing frame, and use imported waterproof glue before splicing, the colloid is