Single Window
Shape design volume is small and exquisite, generous elegant, visual surface without screw exposed
Chain can only single direction bending, open the window from the chain window unit stretched out, and shut the window with retracting, chain hide
The double metal chain piece design, operation more stable and smooth
Overload overload protection, but closed the window more closely
Low noise design
Design life load open closed 20000 times
Rotary support
It is applicable for various window type
Appearance color can be according to the customer request ordering, conventional color for silver