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
外形设计体积小巧，大方精美，可视面无螺丝外露
