I received the chair, but it lacks the accessories needed to assemble it. I don’t have many screws in the installation guideIn order to prevent the screws from being lost during transportation, many screws have been pre-installed on the chair. Please check the underside of the seat and the side of the backrest, and then you will find it. Please refer to it again to confirm whether the screw is missing. If it is indeed lost, you can mark the missing attachment in the user manual and send it to us, and we will reissue it for you immediately.