The swivel chair is composed of seven major components, namely seat, air rod, chair back, tray, casters, five-star claws, and armrests. Chairs are generally fixed or sliding depending on where and how they are used. There are two ways to connect the chair wheel or fixed base to the chair legs: threaded type and spring ring embedded fixed type. Sliding chair wheels use different materials according to the different softness and hardness of the floor to match the sliding speed of the chair. Use soft wheels for hard floors and hard wheels for soft floors. The basic function of a chair is to support the user's body while working or resting. The office swivel chair requires that it can be used in both working and resting states.
       Office workers spend nearly eight hours working on their office chairs every day, and have become "professional sitters." Poorly designed chairs not only affect workers' work efficiency, but also easily lead to fatigue, which can lead to low back pain or spinal disease. It is one of the main causes of back injuries. It is believed that these diseases accumulate slowly and are difficult to detect early.
       In different working environments, the adjustment of the chair back angle can help users improve their back posture to reduce back pressure. The chair can adjust the forward tilt angle to match the user's physical activities and provide a correct sitting posture, which can reduce the pressure on the user's body.