1. Innovative hinge concealed structure, better sealing performance, the hinge is not exposed when closed, and the overall shape of the folding door is more beautiful;

2. The hinge hiding mechanism is arranged in the middle of the profile, which solves the problem that the single-side force of the door leaf is easy to deform the fan profile when the existing exposed hinge folding door is opened, the door leaf installation is more stable and the force is more uniform;

3. New type of upper and lower synergistic sliding support structure, better bearing capacity, strong stability and smoother and smoother with high-strength stainless steel slide rails;

4. The special rubber strip can seal when the door and window are closed, and can prevent pinching the finger, and the watertightness and airtightness are better;

5. The glass fan adopts the strip-type heat-insulating aluminum profile, which is matched with the insulating glass and has high heat insulation performance;

6. Can realize a variety of open combination methods, such as 440, 422, 431, 321, etc., and can realize full opening of the corner, and the field of view is wider;

7. Luxurious appearance, suitable for villas, hotel lobby, convention center, etc.