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 can reach 83% light transmittance , 10% higher than normal window.

Concealed operation lock, no fittings can be seen in front of window, simple and beautiful, easy to operate.

Top roller sealing structure, enhances anti - lift function and ensures overall safety.

hidden sash embedded in the frame remarkably increases lighting performance and air-tightness.

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

The insulating aluminum strip is coated by fluorocarbon to avoid changes in the surface of the aluminum strip for a long time.

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