Rui Chen Environmental Protection: Chen Wandong promises not to reduce holdings for 36 months.

Ruichen Environmental Protection Announcement: The company held the sixth meeting of the third board of directors and the sixth meeting of the third board of supervisors on May 9, 2025, and approved the resolution regarding the issuance of shares to specific objects in 2025. Mr. Chen Wandong, as the subscriber in this case, issued a "Letter of Commitment not to reduce the company's shares during a specific period". The specific contents are as follows: 1. I confirm that there was no reduction in the holdings of Ruichen Environmental Protection shares by the sixth month before the pricing date of the issuance of shares to specific objects. I promise not to reduce the holdings of Ruichen Environmental Protection shares from the pricing date to six months after the completion of this issuance, and I also promise not to reduce the shares subscribed in this issuance of Ruichen Environmental Protection within 36 months after the completion of this issuance. 2. If I violate the aforementioned commitment and reduce the holdings of Ruichen Environmental Protection shares, I promise that all proceeds from the reduction will belong to Ruichen Environmental Protection.