Topwindow Aluminium Cheap Folding Window Aluminum Bi Fold Bifold Windows Price on China WDMA exterior Surface treatment 1

Surface treatment 1

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

to ensure smooth and beautiful welding and long-term use of stability

Avoids interference with the pipings and tracks above the openings

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Topwindow Aluminium Cheap Folding Window Aluminum Bi Fold Bifold Windows Price on China WDMA exterior Surface treatment 1Topwindow 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,