The board of directors of Jiangsu Recbio Technology Co., Ltd. received resignation reports of Mr. Zhao Hui (Mr. Zhao) and Dr. Du Wei (Dr. Du) on March 20, 2023. Mr. Zhao and Dr. Du resigned from their positions as non-executive directors and members of the Remuneration and Appraisal Committee of the Board of the Company due to the change in their personal work arrangements. Pursuant to the relevant provisions of the Articles of Association of Jiangsu Recbio Technology Co., Ltd., the resignation reports of Mr. Zhao and Dr. Du take effect from the date on which the resignation reports are submitted to the Board.