The headrest hinge has a variety of surface treatment processes, such as gold-plated, bright chrome, electroplating, environmental protection, blue zinc and so on.This sofa headrest hinge has the characteristics of anti metal fatigue, rust prevention, light mechanical structure, stable mechanical performance, long service life, wide application range and so on.It is suitable for the installation of all kinds of sofa headrest parts such as Modern Upholstered Sofa.It can be made of different specifications according to customer requirements, the corner bolt rod, gear and angle etc, so that it can be used in different situation.