Topwindow Aluminium Cheap Folding Window Aluminum Bi Fold Bifold Windows Price on China WDMA exterior Avoids interference with the pipings

Avoids interference with the pipings and tracks above the openings

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Step 5: Fill in the space between each two pallets by air bags or other cushions

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Topwindow Aluminium Cheap Folding Window Aluminum Bi Fold Bifold Windows Price on China WDMA exterior Avoids interference with the pipingsTopwindow Aluminium Cheap Folding Window Aluminum Bi Fold Bifold Windows Price Manufacturer&Desginer 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 fully extruded when we fasten screw, so the waterproof problem is solved. 3. Profile adopts European standard hardware notch, muti point locking,