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

Adopting three layers of sealing structure design to enhance water tightness, air tightness, soundproof and heat-insulating performance.

Concealed internal drainage system, wind pressure protected.

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

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

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