Yonker Environmental Protection Co.Ltd(300187) 4 / 26 announcement: Recently, the board of directors of the company received a written resignation report submitted by Ma Mingfeng, chairman of the company. Ma Mingfeng, chairman of the board of directors, applied to resign as chairman and director of the company, chairman of the strategy committee of the board of directors and member of the Nomination Committee for personal work reasons. His original term of office expires at the expiration of the Fifth Board of directors on September 14, 2023. After resigning from the above positions, Ma Mingfeng will no longer hold any position in the company. All directors of the company jointly elect director and general manager Wang Feng to perform the duties of the chairman of the company on behalf of the chairman of the board of directors. The period starts from the date of the resolution of the board of directors until the new chairman is elected by the board of directors. The company will elect the new director and chairman of the board of directors in accordance with legal procedures as soon as possible.