1. The multi axis movable track changing window sash opening system is adopted, and the handle is rotated. After the window sash is opened and popped, it can be pushed and pulled to one side, so as to organically integrate the opening methods of flat opening window and sliding window, and realize the flat opening, rotation, push and pull function of window sash.
2. The multi-point locking technology around the window sash and the use of sealant strip can greatly improve the tightness when the window sash is closed.
3. The multi-point locking sealing structure and the comprehensive control of many elements such as insulating glass and frame material, glass configuration, structural design and process processing accuracy can greatly improve the functions of sound insulation and noise reduction, heat insulation and energy saving, wind resistance and earthquake resistance.