The core difference between genuine system doors and windows and fake system doors and windows

Gluing process: The corner joints of true system windows are made using corner-impact gluing or pin-impact gluing techniques. The angle brackets are filled with special glue between the angle brackets and the profiles, while fake system windows are simply fixed with screws or treated with simple corner impact. 

Thermal insulation strip material: True system windows use PA66 nylon thermal insulation strips (with brand marking), while fake system windows may use PVC material (which will melt and drip oil when tested with a lighter). 

Sealing structure: True system windows have three sealing designs (profiles, glass, and trim), while fake system windows usually have two seals or discontinuous seals. 

Cavity design: True system windows have clear cavity divisions (cold cavity, warm cavity, and equal pressure cavity), while fake system windows have the same cavity size or chaotic structures. 

Potential risks and purchase suggestions for system windows 

High price for low-quality trap: Some merchants attract users with low prices, but they use recycled aluminum (with a wall thickness of less than 1.8mm), inferior hardware (not imported brands), or ordinary glass to imitate coated glass. 

High installation threshold: The installation error of sealing strips needs to be controlled within 1mm. Non-professional teams are prone to causing a 40% or more decrease in sealing performance. It is recommended to choose CMA-certified installation teams. 

Excessive sealing problem: The highest grade airtightness (9 levels) may cause insufficient indoor ventilation. It needs to be used with a new air system. The aging risk of poor-quality sealing strips is high within 3 years.