The board of directors (the "Board") of YCIH Green High-Performance Concrete Company Limited (the "Company") hereby announces that Mr. Li Yongqing ("Mr. Li") resigned as a deputy general manager of the Company due to work adjustment. In accordance with the Company Law of the
People's Republic of China and the Articles of Association of YCIH Green High-Performance Concrete Company Limited, the relevant resignation shall become effective at the Board meeting held on June 12, 2023. Mr. Li has confirmed that he has no disagreement with the Company and the Board, and there is no matter in relation to his resignation that needs to be brought to the attention of the shareholders of the Company or The Stock Exchange of Hong Kong Limited.