1. Thermal insulation: The presence of hollow layers can effectively reduce heat transfer, block the exchange of indoor and outdoor temperatures, and improve the insulation performance of buildings.

2. Sound insulation and noise reduction: Hollow layers can reduce the propagation of external noise indoors, provide better sound insulation effects, and improve the comfort of indoor environments.

3. Preventing condensation: Due to the double-layer structure of insulated glass, it can effectively reduce condensation on the glass surface and prevent water vapor from condensing on the glass.

4. Improved safety: Compared to single-layer glass, the double-layer structure of insulated glass provides higher impact resistance and safety.