上大股份：在航天领域，公司产品主要用于固体火箭发动机壳体、液体火箭发动机热端部件等关键零部件的制造

Group 1 - The company has a wide application of its products in high-end equipment manufacturing for aerospace, gas turbines, steam turbines, and nuclear engineering [2] - In the aerospace sector, the company's products are primarily used for manufacturing solid rocket motor casings, liquid rocket engine hot-end components, rocket balance rudder shafts, and other high-temperature, high-strength critical components [2] - The company has obtained qualification certifications from major commercial aerospace enterprises such as Blue Arrow Aerospace and has established stable mass production and supply relationships [2]