According to the Company Law, the Listing Rules of Shenzhen Stock Exchange and other relevant regulations, the new senior management of the Company must be reviewed, approved and disclosed by the board of directors. The new senior managers shall sign the Statement and Commitment of Senior Managers within one month after the appointment is approved by the board of directors, and report it to Shenzhen Stock Exchange for the record. According to the Stock Listing Rules of Shenzhen Stock Exchange: "The resignation or change of the chairman, manager, directors (including independent directors) or more than one third of the supervisors of the company" must be disclosed in time, and the change information of other supervisors and senior management personnel is disclosed in the annual report and interim report of the listed company. Investors can consult the relevant announcements of listed companies. However, the letter of appointment of senior executives of listed companies does not need to be submitted to Shenzhen Stock Exchange for filing. Please contact the listed company for the specific letter of appointment.