Abstract: A dual use office and leisure chair is provided that overcomes the shortcomings of existing technology. A chair back is provided that is hingeably attached with the handrails. Installation of a pneumatic rod and adjustment device hingeably attached to the chair back enables adjustment to different inclination angles for the chair back, the inclination angle is selectively fixed at any angle within the travel of the pneumatic rod. Simple adjustment, easy use, and long lifetime make it possible to achieve office and leisure dual use for the chair.

Abstract: A chair arm is rotatably folded and assembly-free, which is applicable for a new type folding chair, said chair arm comprising a back panel pin, an arm, a fixation for the pin, and a connection screw. The back panel and the arm are connected through the screw via a screw hole formed on the top end of the arm with said screw hole being a rotation center.