上大股份：已与航天科技/航天科工集团下属院所开展合作，已成为其高温合金等材料的合格供应商

Group 1 - The company has established cooperation with the China Aerospace Science and Technology Corporation's Eighth Academy, becoming a qualified supplier of high-temperature alloys and other materials [2] - The products supplied by the company are primarily used in the manufacturing of solid rocket motor casings, liquid rocket engine hot-end components, rocket balance rudder shafts, and other critical high-temperature, high-strength components for spacecraft [2] - The company has participated in the trial production verification and mass production delivery of special alloy products used in various models of aerospace engines and related equipment [2]