It is usually used in large conference rooms, school or government halls, and large-scale singing and dancing theaters. It is an indispensable chair in today's society, most of which are composed of four parts: chair seat, chair back, armrest and standing leg. Under normal circumstances, standing feet and handrails are integrated to form a firmly installed handrail frame. The composition structure is generally steel-wood structure or steel-plastic structure.

　　Is divided into two types: one-legged landing (one-legged landing) and handrail standing leg landing (the standing leg is directly connected to the armrest frame).

　　One-legged seats, standing on the foot support the center point of the seat, in addition to its beautiful appearance, it is also convenient to use the chair legs to connect with other environmental facilities, such as vents, power interfaces, etc. Due to the relatively complicated connection method of the monopod, the cost of the monopod mechanism has increased accordingly.

　　The way of standing on the foot of the handrail is firm, reliable, and easy to fix and install. The combination of the handrail frame and the standing foot has a simple structure.

　　The foot stand is the foundation for the support of theater chairs, usually fixed directly on the ground with anchors

　　The armrest of the theater chair is the basic support of the entire seat. The main parts of the seat are connected to the armrest.

　　The structure of handrail includes:

　　1. Metal frame: the skeleton of the armrest is basically the support connector of the entire auditorium chair.

　　2. Armrest plate: made of wood or plastic and other materials,

　　3. Writing board mechanism: The writing board mechanism can be installed on the armrest of the theater chair for the purpose of meeting record