When buying aluminum alloy window handles, it is recommended to consider the following four aspects:

1. Material and surface treatment. High-quality aluminum alloy window handles should be made of 6063 or 6463 aviation-grade aluminum alloy, which has high strength and corrosion resistance. The surface treatment process (such as anodizing, electrophoretic coating or powder spraying) directly affects the service life. It is recommended to choose a finished product with uniform film and consistent color.

2. Structural design and adaptability. Before purchasing, it is necessary to confirm whether the opening size, pitch and installation hole distance of the handle match the existing window sash to avoid the embarrassment of "not being able to fit after buying. The handle structure of casement window, sliding window and hanging window is quite different, so it should be selected accordingly.

3. Lock the lock seat to match. The handle, lock point and lock seat are a set of linkage system. It is recommended to purchase the same brand products in complete sets to ensure smooth transmission and tight locking to avoid loosening or not tightly closed.

4. Brand and after-sales. Priority should be given to manufacturers with quality certification (such as ISO9001) and perfect after-sales guarantee. Regular products are more guaranteed in terms of bearing and service life.