The board of directors of China Isotope & Radiation Corporation announced that due to work adjustment, Mr. Wu Laishui has resigned from his positions as the Company Secretary and Authorized Representative of the Company, with effect from 30 November 2020; the board has resolved to appoint Mr. Gui Youquan as the Company Secretary and continue to engage Ms. Kam Mei Ha Wendy as the Joint Company Secretary of the company, with effect from 30 November 2020.