窄边型材设计，增加窗扇透光性(采光面积超过整窗面积83%，比普通门窗高10%),保证良好通透性。

Narrow profile design, increasing the light transmittance (It can reach 83% light transmittance 10% than normal window systems) ,ensuring good permeability.

Dedicated concealed handle, no fittings can be seen in front of the window, simple and beautiful, easy to operate.

Top bearing roller design ensures high level of safety.

Independent built-in drainage system, not affected by wind pressure.

Connecting structures are sealed with structural sealant+ dowel technology, ensuring structural strength and high bearing capacity.

Standard 5G+20A+5G insulating glass.