执手操作带有悦动响声，开启手感顺畅，舒适。

Pleasant sounds will be heard when turning the handle around the opening positions, smoothly and comfortably.

Concealed internal drainage system, protected from wind pressure.

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

Concealed hinge on flush sash, maintains the overall aesthetic when closed.

Glass uses gasket assembly process to improve installation efficiency and installation.

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