Core Viewpoint - The A-share market saw a significant rise in non-ferrous metal stocks on December 12, with several companies experiencing gains of over 2% to 3% [1]. Group 1: Stock Performance - Xiyeg股份 (Ticker: 000960) increased by 3.49%, with a total market capitalization of 42.9 billion and a year-to-date increase of 89.59% [2]. - Guocheng Mining (Ticker: 000688) rose by 3.42%, with a market cap of 28.3 billion and a year-to-date increase of 103.45% [2]. - Chihong Zn & Ge (Ticker: 600497) saw a gain of 3.41%, with a market cap of 33.7 billion and a year-to-date increase of 23.51% [2]. - Western Mining (Ticker: 601168) increased by 3.00%, with a market cap of 61.3 billion and a year-to-date increase of 70.38% [2]. - Jincheng Mining (Ticker: 603979) rose by 2.87%, with a market cap of 43.2 billion and a year-to-date increase of 92.53% [2]. - Zhongjin Lingnan (Ticker: 000060) increased by 2.67%, with a market cap of 23.9 billion and a year-to-date increase of 17.24% [2]. - Zhongjin Gold (Ticker: 600489) rose by 2.66%, with a market cap of 108.5 billion and a year-to-date increase of 91.05% [2]. - Shangda Co. (Ticker: 301522) increased by 2.28%, with a market cap of 12.4 billion and a year-to-date decrease of 8.57% [2]. - Shanjin International (Ticker: 000975) rose by 2.03%, with a market cap of 67 billion and a year-to-date increase of 59.85% [2]. - Yun Aluminum (Ticker: 000807) increased by 2.01%, with a market cap of 95.2 billion and a year-to-date increase of 108.06% [2].

Group 1 - The company announced a change in the signing registered accountants for the 2025 financial report audit and internal control audit projects to Mr. Huang Fei (project partner) and Mr. Xie Fei [2]

Core Viewpoint - The company has developed a proprietary high-temperature alloy recycling technology that enhances product quality, stability, cost control, and ensures the timely supply of strategic resources [1] Group 1: Company Innovations - The company has over ten years of experience in innovation and research [1] - The developed technology is focused on the recycling and regeneration of high-temperature alloy return materials [1] Group 2: Applications in Aerospace - The company's products 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 [1] - The company has obtained qualification certifications from major aerospace enterprises such as Aerospace Science and Technology Corporation, Aerospace Industry Corporation, Blue Arrow Aerospace, and Jiuzhou Cloud Arrow [1] Group 3: Production and Supply - The company has established long-term stable mass production and supply capabilities [1]

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 ...

格隆汇12月10日丨上大股份(301522.SZ)在互动平台表示，公司生产的高温合金、耐蚀合金、高品质特 种不锈钢等产品可以广泛应用于海洋工程、石油化工等装备的生产制造。 ...

（记者 王晓波） 上大股份（301522.SZ）12月10日在投资者互动平台表示，公司生产的高温合金、耐蚀合金、高品质特 种不锈钢等产品可以广泛应用于海洋工程、石油化工等装备的生产制造。 每经AI快讯，有投资者在投资者互动平台提问：公司产品在页岩气及可燃冰领域有应用吗？ ...

（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]