Group 1 - The core transaction involved 830,000 shares of Shangda Co., with a total transaction value of 26.74 million yuan, accounting for 8.04% of the total trading volume on that day [1][2] - The transaction price was 32.22 yuan per share, which represents a discount of 0.89% compared to the market closing price of 32.51 yuan [1][2]

证券代码：301522 证券简称：上大股份 公告编号：2025-043 中航上大高温合金材料股份有限公司 关于变更签字注册会计师的公告 本公司及董事会全体成员保证信息披露的内容真实、准确、完整，没有虚 假记载、误导性陈述或重大遗漏。 中航上大高温合金材料股份有限公司（以下简称"公司"）于 2025 年 2 月 24 日召开第二届董事会第八次会议、2025 年 3 月 18 日召开 2024 年年度股东会， 审议通过了《关于续聘 2025 年度审计机构的议案》，同意续聘立信会计师事务 所（特殊普通合伙）（以下简称"立信"）为公司 2025 年度审计机构。具体内 容详见公司于 2025 年 2 月 25 日在巨潮资讯网（http://www.cninfo.com.cn）披露 的《关于续聘审计机构的公告》（公告编号：2025-008）。 公司于近日收到立信出具的《关于变更中航上大高温合金材料股份有限公司 签字注册会计师的函》，现将具体情况公告如下： 一、签字注册会计师变更情况 立信作为公司 2025 年度审计机构，原委派郭顺玺先生（项目合伙人）、解 飞先生为签字注册会计师，为公司提供 2025 年度审计服务。鉴于立 ...

Group 1 - The company produces high-temperature alloys, corrosion-resistant alloys, and high-quality special stainless steel [1] - These products have wide applications in marine engineering and petrochemical equipment manufacturing [1]

Core Viewpoint - The company has confirmed that its products, including high-temperature alloys, corrosion-resistant alloys, and high-quality special stainless steel, are applicable in marine engineering and petrochemical equipment manufacturing [1] Group 1 - The company produces high-temperature alloys, corrosion-resistant alloys, and high-quality special stainless steel [1] - These products can be widely used in marine engineering and petrochemical equipment manufacturing [1]

（编辑 姚尧） 证券日报网讯 12月10日，上大股份在互动平台回答投资者提问时表示，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、火箭平衡舵轴等结构件和其他航天器耐高温、高强 度关键零部件的制造。 ...

Core Viewpoint - The company has established a partnership with aerospace technology and aerospace industry groups, becoming a qualified supplier of high-temperature alloys and other materials for critical aerospace components [2] Group 1: Company Developments - The company has collaborated with institutions under the aerospace technology and aerospace industry groups [2] - It has become a qualified supplier of high-temperature alloys, which are essential for manufacturing components such as solid rocket engine casings and liquid rocket engine hot-end parts [2] - The company is involved in the trial production and delivery of special alloy products used in various models of aerospace engines and equipment [2]

Core Viewpoint - The company, Shangda Co., Ltd. (301522), is actively involved in the production of high-end equipment components for various industries, including aerospace, gas turbines, steam turbines, and nuclear engineering, with a focus on high-temperature and high-strength parts [1] Group 1: Aerospace Applications - The company's products are extensively used in the aerospace sector, specifically for manufacturing solid rocket motor casings, liquid rocket engine hot-end components, rocket balance rudder shafts, and other related high-temperature and high-strength critical components [1] - The company has obtained qualification certifications from major aerospace enterprises such as Aerospace Science and Technology Corporation (000901), Aerospace Science and Industry Corporation, Blue Arrow Aerospace, and Jiuzhou Cloud Arrow, ensuring stable mass production and supply [1]

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]

| 交易日期 | 证券代码 | 证券简称 | 成交价格 (元) | 成交量 (万股/万份) | 成交金额 买方营业部 (万元) | | 卖方营业部 | | --- | --- | --- | --- | --- | --- | --- | --- | | 2025-12-04 | 301522 | 上大股份 | 30.40 | 30.00 | 912.00 东兴证券股份有限 | | 中国中金财富证券 | | | | | | | | 公司成都都江堰市 | 有限公司苏州中心 | | | | | | | | 彩虹大道证券营业 | 证券营业部 | | | | | | | | ਸੀ | | 12月4日，上大股份大宗交易成交30万股，成交额912万元，占当日总成交额的7.57%，成交价30.4元，较市场收盘价30.86元 折价1.49%。 ...

Group 1 - The core event involves a block trade of 720,000 shares of Shangda Co., with a transaction value of 22.9536 million yuan, accounting for 15.07% of the total trading volume on that day [1] - The transaction price was 31.88 yuan per share, which represents a discount of 0.9% compared to the market closing price of 32.17 yuan [1]