Heavy duty folding door

Innovative hidden hinge structure, combined with a special sealing structure with adhesive strips, provides better water and air tightness. When closed, the hinge does not leak, resulting in a more aesthetically pleasing overall appearance; The hinge hidden mechanism is set in the middle of the profile, which solves the problem of deformation of the door leaf when the existing exposed hinge folding door is opened, and the installation of the door leaf is more stable, and the force on the double pulleys is more uniform; Strengthen the construction of the central column to improve wind resistance, compression resistance, and stress balance. All force points are located at the center of the door, so the entire door is not prone to sagging; Multiple combination methods can be implemented, such as 660 642. 651, etc., and can achieve full opening of corner folding, making the Jianye more spacious