The chair is one of the common furniture in our daily life, which is composed of the sitting surface, the back and the legs. Chairs have different shapes and functions, such as dining chairs, office chairs, rocking chairs and so on.

Chairs play an important role in our daily life.First, chairs are used for rest and relaxation.When we feel tired, we can sit on a chair and have a rest. The comfort of the chair plays an important role in eliminating fatigue. Some chairs are also equipped with the ability to adjust the height and backrest Angle, so that we can adjust the sitting position according to our own needs,so as to better relax the body.