The seat must be safe and reliable, with sufficient strength, rigidity and durability, compact structure and minimized mass; All kinds of adjustment mechanisms set up to meet the comfort of drivers and passengers shall have reliable locking devices to ensure safety.

The driver and passenger of the car seat shall provide convenient, comfortable and safe driving and riding positions. The arrangement of seats in the whole carriage shall be reasonable, especially the driver's seat must be in the best position; The shape design of the seat must conform to the physiological function of the human body, and strive to be beautiful on the premise of ensuring comfort;