上大股份：参与了多型号相关航天发动机等装备所用特种合金产品的试制验证和批产交付工作

Core Viewpoint - The company has established partnerships with major aerospace enterprises, becoming a qualified supplier of high-temperature alloys and other materials for critical aerospace components [2] Group 1: Company Developments - The company is involved in the manufacturing of components such as solid rocket motor casings, liquid rocket engine hot-end parts, and rocket control surface shafts [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 equipment [2]