上大股份：公司产品可用于航天多零部件制造

Group 1 - The company, Shangda Co., Ltd. (301522), is involved in the aerospace sector, providing products for solid rocket motor casings, liquid rocket engine hot-end components, and rocket balance rudder shafts [1] - The company's products are critical high-temperature and high-strength components used in the manufacturing of various rocket and missile parts [1]