上大股份(301522.SZ)：在航天领域，公司现已取得主要航天企业的资质认证，并长期稳定批产供货

Group 1 - The company has obtained qualification certifications from major aerospace enterprises and has established a long-term stable production and supply chain [1] - The products are primarily used in the manufacturing of solid rocket motor casings, liquid rocket engine hot-end components, rocket balance rudder shafts, and other high-temperature, high-strength critical components for spacecraft [1]