Window with its excellent characteristics,the wide appreciation of the user,in the selection of aluminum alloy doors and windows should pay attention to the following matters:

1) identification of signs

Formal or manufacturers have production license,in the apparent position of the aluminum alloy doors and windows products are marked with the product logo,including: Manufacturer's name or trademark,product name,product model or mark,manufacturing date or number. The box should be marked "moisture","handle with care" and "up" words and signs.

2) surface quality

Door and window surface quality directly affects the performance of the entire wall after the installation of the installation. Check the surface quality of doors and windows should pay attention to the following aspects:

A. door and window decoration surface should not have obvious damage, it refers to the surface of doors and windows of the protective film should not scratch marks

B. There is no obvious difference between the colored surfaces of adjacent components on the windows and doors.

C. door and window surface should not be aluminum powder,burr,grease or other stains,junction assembly should not overflow adhesive.

3) size deviation

The size deviation of the aluminum alloy door and window frame is better.

4) aluminum alloy door and window component connection should be firm,need to use corrosion resistant filling material to make connection part sealing,waterproof. Welcome to our company: kdsbuilding.