Aesthetic architecture: The top-folding door frame can be used with various exterior wall building materials to achieve a consistent hidden door effect and be aesthetically pleasing practicality.  

Canopy/ventilation/anti-ultraviolet: large opening design with multiple functions, in line with Modern fashion penetrates the field of vision, bright and spacious open space. 

Sanjiu Company's newly released top-folding door frame can be used with a variety of different exterior wall building materials, making the overall exterior wall consistent and more effective in hiding the door, making it difficult to see the opening position of the building. In the planning and design stage, the design unit did not dare or reduce the opening design to avoid the doubt of destroying the aesthetic feeling of the building, and endow the building with the greatest significance of both aesthetics and practicality.