Beixin Road Bridge: Director Huang Guolin resigns due to job changes.

North Xinlu Bridge Announcement: The Board of Directors of the company received a written resignation report from Mr. Huang Guolin on April 7, 2026. Mr. Huang Guolin resigned from the position of company director due to job changes. After resigning, Mr. Huang Guolin will not hold any positions in the company or its subsidiaries. According to relevant regulations, Mr. Huang Guolin's resignation will not result in the number of board members falling below the statutory minimum, nor will it affect the normal operation of the Board of Directors. His resignation report will take effect from the date of receipt by the company's Board of Directors. As of the disclosure date of this announcement, Mr. Huang Guolin does not hold any shares in the company, and there are no unfulfilled commitments.