Types of interrogation chairs: 1. Iron interrogation chairs, all iron round tube interrogation chairs, with thickened steel plates for the seat and lock handle panels, key type locks, and specially designed keys. There is a spring switch at the back of the chair, and the foot lock automatically opens when the switch is turned. No other locks need to be equipped during use, and the backrest has a chest strap, which can effectively restrain prisoners. The interrogation chair is designed according to the specific needs of the trial inmate. In order to prevent the inmate from escaping or unexpected events during the trial process, there is an interrogation chair. The interrogated person sits in, their feet are placed on patterned steel plates, and the staff closes the movable door with their right hand. At the same time, their left hand breaks open the elastic perforated flat steel (in a horizontal state) again. 2. The wooden interrogation chair is made of elm wood, with a smooth surface and high hardness, which is not easy to deform or crack. Locks can be installed on the upper and lower parts of the chair. After the chair is completed, the backrest and front panel are removed, packaged and packed into a box. The chair can be fixed to the ground to prevent prisoners from escaping with the chair. 3. Soft pack interrogation chair, wooden chair frame, seat, backrest, and armrests are all treated with soft pack, and locks can be installed on both the upper and lower parts. The back is equipped with a restraining strap to effectively prevent escape. The talk table and chairs of the Discipline Inspection Commission are tightly assembled with high-quality hardware accessories, which are firm, with small and even gaps, flat and sharp. The Discipline Inspection Commission has very strict requirements for indoor safety and anti-collision, requiring an integrated anti-collision system. The sobering chair is a fixed iron chair, with soft packaging for the panel and armrests. However, there are wooden sticks or stretchable straps fixed on the legs, chest, and arms, which can prevent people from moving when sitting, effectively preventing drunk people from causing trouble in unconscious situations.