1. Multi cavity structure profiles effectively block thermal conduction, improving insulation performance.

2. Multi-channel sealing design (three seals) fills gaps between sash and frame to prevent sound leakage.

45° diagonal joint with corner code injection glue ensures high structural strength and ultimate sealing performance. The cured colloid provides excellent weather resistance and durability.

Effectively avoids harm to the human body, especially children, caused by sharp internal fan angles.

High-strength aluminum alloy, zinc alloy, and stainless steel components with multi-layer electroplating for superior corrosion and scratch resistance.

Reliable waterproof system that reduces rainwater backflow risk. Hidden drainage holes maintain a concise appearance while preventing dust and insects.