The folding sofa bed has sunk in the middle. How can you recover?
Restore the original folded appearance, and then open back and forth a few times, if not, you look at the hinge below, there is no problem
There are many reasons for the sofa depression: sponge sag; spring deformation and fall; wood side fracture; use force uneven; general sponge deformation less, spring fall off, wood break more.
Restore the original folded appearance, and then open back and forth a few times, if not, you look at the hinge below, there is no problem
