1. Acoustic Performance: The glass used in system windows and doors is typically double-glazed with a hollow core, filled with inert gas. Due to the excellent thermal and acoustic insulation properties of the inert gas, when external sounds pass through the glass and propagate into the air, the sound waves are reflected and significantly attenuated within the hollow glass, resulting in minimal to no sound entering the room, achieving excellent acoustic insulation. 2. Thermal Insulation: The primary materials for system windows and doors are thermal break aluminum profiles and hollow glass. "Thermal break aluminum" refers to the process of cutting the aluminum alloy in half and using thermal break bars to integrate the two halves. This prevents heat from easily passing through the entire material, providing excellent insulation. 3. Water and Air Tightness: System windows and doors utilize superior sealing strips. They are equipped with sealing strips on the exterior and interior sides of the sash, in the center, and between the frames, with additional strips inside the sash. This creates three layers of sealing: the exterior strip blocks rain, the interior strip prevents outdoor air, and the central strip forms an air cavity, effectively blocking rain from entering the room due to the force of outdoor wind pressure.