Letter regarding CNBM (03323): Commitment to avoid competing in the same industry during the extension of performance.

CNBM (03323) issued an announcement regarding the termination of the transaction involving the acquisition and merger of Ningxia Building Materials Group with China Construction Information, as well as the cement asset restructuring related to Ningxia Building Materials Group and Tianshan Material. Additionally, the company announced a two-year extension for the commitment to avoid competition with Ningxia Building Materials Group and Tianshan Material. In August 2026, the company sent the latest extension letter to the respective companies under commitment, informing them that since making such commitments, it has been dedicated to fulfilling these commitments, actively communicating with relevant parties to seek feasible solutions that do not harm or affect the independence of the listed company while maximizing the interests of public shareholders of the listed company, in order to resolve the issue of competition. The company believes that the integration plan for the basic building materials sector must be developed maturely and promoted steadily under the principles that are beneficial to the development of the listed company and safeguard the interests of public shareholders. Therefore, the company intends to extend such commitments to Ningxia Building Materials Group and Tianshan Material again, to be fulfilled within two years from the date of approval by the respective shareholders' meetings of the companies under commitment for the extension of the commitment to avoid competition. Furthermore, other contents of the 2017 commitment letter remain unchanged.