铁建重工智能盾构系统应用，股价小幅波动

Group 1 - The company has made significant progress in technology research and development, market expansion, and business layout, including the application of an intelligent system for shield tunneling operations and risk prevention, which has achieved over 90% accuracy in decision-making support [1] - The company won a procurement project from the Nagqu City Federation of Trade Unions, amounting to 1.75 million yuan [1] - The company has expanded its business scope to include new energy and agricultural machinery following a recent business registration change [1] - The company's high-end products, including shield machines, have successfully entered multiple European markets [1] - The company has received several invention patent authorizations, including for a "rapid excavation shield machine and excavation method" [1] Group 2 - Over the past week (February 7 to 13, 2026), the company's stock price fluctuated with a range of 1.92% and an amplitude of 2.68% [2] - On February 11, the stock price increased by 0.95% to 5.34 yuan, with a net outflow of 41.19 thousand yuan in main funds [2] - On February 13, the latest stock price was 5.32 yuan, reflecting a decrease of 0.37% with a net inflow of 27.8 thousand yuan in main funds [2] - During the same period, the company's engineering machinery sector declined by 1.67%, and the overall market index showed weak performance [2]