What should I do if the backrest of the boss chair can't straighten up? Can it be repaired?#Office computer chair

The general situation is that the link between the backrest and the chassis is either loose or stuck, so it is easy to do this. Anyway, I feel that your 400 model should not be of good quality for two years, and I also look much worse. There is no such way. One way you can go to furniture and other places to pay for yourself, and the other is to directly find a place you have enough to return to the factory for repairs.