1. Multi-cavity structure profiles (bridge cut aluminum) effectively block thermal conduction, significantly improving insulation.
2. Multi-channel sealing design tightly fills gaps between the window sash and frame, preventing sound leakage and ensuring a quiet environment.

Features a 45° diagonal joint with corner code injection glue for superior safety:
1. High structural strength resisting wind pressure and deformation.
2. Ultimate sealing performance blocking air and moisture.
3. Excellent weather resistance avoiding looseness or vibration noise.

Utilizes high-strength aluminum alloy profiles and heavy-duty load-bearing ground rails. The system ensures smooth operation and includes anti-roll devices for long-term durability and safe usage.

1. Reliable waterproof performance: Effectively discharges rainwater and prevents backflow during storms.
2. Enhanced aesthetics: Drainage holes are hidden at the bottom or side, offering a clean look.
3. Dust and insect proof: Equipped with invisible covers to prevent debris and mosquitoes from entering.