二、公司关注并核实的相关情况 证券代码：600307 证券简称：酒钢宏兴 公告编号：2026-003 甘肃酒钢集团宏兴钢铁股份有限公司 股票交易异常波动公告 本公司董事会及全体董事保证本公告内容不存在任何虚假记载、误导性陈述或 者重大遗漏，并对其内容的真实性、准确性和完整性承担个别及连带责任。 重要内容提示： 甘肃酒钢集团宏兴钢铁股份有限公司（以下简称"公司"）股票交易于 2026 年 3 月 17 日、3 月 18 日连续两个交易日内收盘价格涨幅偏离值累计超过 20%，根据《上 海证券交易所交易规则》的有关规定，属于股票交易异常波动情形。 经核查，截至本公告日，公司及控股股东酒泉钢铁(集团)有限责任公司（以下 简称"酒钢集团"）均不存在重大资产重组、股份发行、收购、债务重组、业务重组、 资产剥离、资产注入、股份回购、股权激励、破产重整、重大业务合作、引进战略投 资者等应披露而未披露的重大事项。 重大风险提示。公司提醒广大投资者以公司指定的信息披露媒体《中国证券报》 《上海证券报》《证券时报》及上海证券交易所网站刊登的公告信息为准，公司将按 照有关法律法规的规定和要求做好信息披露工作，敬请广大投资者注意投资风 ...

- The report focuses on tracking large buy orders and net active buy orders using transaction detail data[1][2] - Two key indicators are used: the proportion of large buy order transaction amounts and the proportion of net active buy order amounts[7] - The proportion of large buy order transaction amounts reflects the buying behavior of large funds[7] - The proportion of net active buy order amounts reflects investors' active buying behavior[7] - The report provides rankings for stocks, industries, and ETFs based on these indicators over the past 5 trading days (20260309-20260313)[4][6] Quantitative Models and Construction Methods 1. **Model Name**: Large Buy Order Transaction Amount Proportion - **Construction Idea**: To track the buying behavior of large funds[7] - **Construction Process**: - Restore transaction data to buy and sell order data using the buy and sell sequence numbers in the transaction detail data - Filter out large orders based on transaction volume - Calculate the proportion of large buy order transaction amounts to the total transaction amount of the day[7] - **Evaluation**: This indicator effectively captures the buying behavior of large funds[7] 2. **Model Name**: Net Active Buy Order Amount Proportion - **Construction Idea**: To track investors' active buying behavior[7] - **Construction Process**: - Identify each transaction as either an active buy or an active sell using the buy and sell markers in the transaction detail data - Subtract the transaction amounts of active sells from active buys to get the net active buy amount - Calculate the proportion of net active buy amounts to the total transaction amount of the day[7] - **Evaluation**: This indicator effectively captures investors' active buying behavior[7] Model Backtest Results 1. **Large Buy Order Transaction Amount Proportion** - **Top 5 Stocks**: - Jiugang Hongxing: 87.2%, 90.5%[9] - Wentou Holdings: 86.6%, 97.1%[9] - Jinbin Development: 86.3%, 86.4%[9] - Ningbo Construction: 85.6%, 98.8%[9] - Xining Special Steel: 85.3%, 97.9%[9] - **Top 5 Industries**: - Banking: 81.3%, 61.3%[13] - Real Estate: 79.8%, 51.0%[13] - Construction: 78.5%, 88.9%[13] - Comprehensive: 77.9%, 46.1%[13] - Steel: 77.7%, 35.4%[13] - **Top 5 ETFs**: - Guotai SSE 10-Year Treasury Bond ETF: 95.4%, 99.6%[15] - Huatai-PineBridge MSCI China A50 Interconnection ETF: 94.0%, 93.4%[15] - Huatai-PineBridge CSI A500 ETF: 93.2%, 90.9%[15] - Guotai CSI A500 ETF: 92.5%, 53.9%[15] - Huaxia CSI A500 ETF: 92.0%, 97.5%[15] 2. **Net Active Buy Order Amount Proportion** - **Top 5 Stocks**: - Minsheng Bank: 22.2%, 98.8%[10] - SDIC Power: 21.8%, 97.1%[10] - Everbright Bank: 19.5%, 99.6%[10] - Zhejiang Bank: 19.2%, 96.3%[10] - Shangtai Technology: 18.9%, 100.0%[10] - **Top 5 Industries**: - Banking: 10.5%, 64.2%[13] - Food & Beverage: 4.7%, 56.0%[13] - Real Estate: 2.5%, 50.2%[13] - Construction: 0.4%, 72.4%[13] - Basic Chemicals: -0.9%, 75.7%[13] - **Top 5 ETFs**: - Harvest CSI Green Power ETF: 35.4%, 98.4%[16] - E Fund CSI Dividend Low Volatility ETF: 21.6%, 97.9%[16] - Huatai-PineBridge CSI All Index Power Utilities ETF: 18.7%, 97.9%[16] - Southern S&P China A-Share Large Cap Dividend Low Volatility 50 ETF: 15.7%, 96.7%[16] - GF GEM ETF: 13.8%, 90.9%[16]

Investment Rating - The report suggests a positive outlook for the steel industry, indicating that leading companies are expected to benefit from improved supply-demand dynamics and enhanced profitability in the medium to long term [4][21]. Core Insights - The steel sector has shown strong performance in sub-segments such as plate and special steel, with year-to-date increases of 10.37%, 9.31%, and 8.85% for plate, special steel, and pipe segments respectively [4][6]. - The Ministry of Industry and Information Technology (MIIT) has initiated an "Industrial Data Foundation Action" aimed at constructing high-quality industry data sets to empower artificial intelligence applications, with the steel industry identified as a key focus area [4][10]. - The report emphasizes the importance of optimizing product structures and highlights the potential for stable high dividends from leading companies such as Baosteel, Shougang, and CITIC Special Steel [21]. Summary by Sections Market Performance - The steel sector has seen a mixed performance with 19 companies rising in stock value, while 57.78% of stocks experienced declines during the week of March 8 to March 15, 2026 [8]. - The top five performers in the steel sector during this week were Jiugang Hongxing, Hainan Mining, Dazhong Mining, Zhongnan Co., and Anyang Steel, with increases of 17.46%, 10.33%, 10.30%, 3.65%, and 3.44% respectively [8][9]. Industry Events - The MIIT's notification on March 10 outlines a plan to establish a collaborative framework among leading companies in the steel sector to enhance data collection and utilization, aiming for breakthroughs in industrial data bottlenecks by the end of 2026 [10][11]. - The initiative includes the creation of a trusted interconnection platform for industry data, which will facilitate the development of high-quality, standardized, and shareable industry data sets [10][12]. Investment Recommendations - The report recommends focusing on companies with optimized product structures and stable high dividends, such as Baosteel, Shougang, CITIC Special Steel, and Hualing Steel [21]. - It also highlights companies with high technical barriers that can withstand market pressures, suggesting attention to Fangda Special Steel, New Steel, and Jiuli Special Materials [21]. - Additionally, it points to upstream resource companies that may benefit from improved supply dynamics, recommending Baotou Steel, Hainan Mining, Hebei Steel Resources, and Jinling Mining [21].

甘肃酒钢集团宏兴钢铁股份有限公司（以下简称"公司"）股票交易于 2026 年 3 月 11 日、3 月 12 日、3 月 13 日连续三个交易日收盘价格涨幅偏离值累计超过 20%， 根据《上海证券交易所交易规则》的有关规定，属于股票交易异常波动情形。 经核查，截至本公告日，公司及控股股东酒泉钢铁(集团)有限责任公司（以下 简称"酒钢集团"）均不存在重大资产重组、股份发行、收购、债务重组、业务重组、 资产剥离、资产注入、股份回购、股权激励、破产重整、重大业务合作、引进战略投 资者等应披露而未披露的重大事项。 重大风险提示。公司提醒广大投资者以公司指定的信息披露媒体《中国证券报》 《上海证券报》《证券时报》及上海证券交易所网站刊登的公告信息为准，公司将按 照有关法律法规的规定和要求做好信息披露工作，敬请广大投资者注意投资风险。 一、股票交易异常波动情况 证券代码：600307 证券简称：酒钢宏兴 公告编号：2026-002 甘肃酒钢集团宏兴钢铁股份有限公司 股票交易异常波动公告 本公司董事会及全体董事保证本公告内容不存在任何虚假记载、误导性陈述或 者重大遗漏，并对其内容的真实性、准确性和完整性承担个别及连带责任。 ...

Core Viewpoint - The steel industry is transitioning from a "cold winter" to a "warm spring" as production resumes post-Spring Festival and industry fundamentals improve, leading to a strong performance in the A-share steel sector with significant capital inflow [1][2] Group 1: Market Performance - On February 25, the A-share steel sector saw a collective rise of over 5%, with net capital inflow of 1.502 billion yuan, and all stocks in the sector closing in the green [1] - Notable stocks such as Baogang Co., Anyang Iron & Steel, and Linggang Co. reached their daily limit up, indicating strong market sentiment [1] Group 2: Production and Profitability - Several steel companies reported strong production results for January 2026, with Fangda Steel achieving production rates of 105.01% for pig iron, 110.63% for crude steel, and 110.71% for steel products [1] - Over half of the nearly 30 steel companies that released performance forecasts for 2025 expect positive net profits, with companies like Hualing Steel, Shougang Co., and Liugang Co. projecting net profits exceeding 500 million yuan [1] Group 3: Supply and Demand Dynamics - Steel social inventory continues to rise, but at a slower pace compared to previous years, indicating manageable inventory pressure for steel mills [2] - The demand is expected to gradually improve as workers return post-Lunar New Year, although full demand recovery will take time [2] Group 4: Policy Support - The steel sector benefits from supportive policies, including a joint plan by multiple government departments focusing on governance, supply optimization, transformation promotion, consumption expansion, and cooperation enhancement [2] - Specific measures include precise control of production capacity and promoting quality upgrades for bulk products [2] Group 5: Future Outlook - Multiple institutions express optimism for the steel industry, with China Galaxy Securities highlighting the improvement in supply-demand dynamics and industry profitability as key investment themes [3] - The upcoming peak season for industrial, infrastructure, and real estate activities in March and April is expected to further drive price increases in the steel and construction materials sectors [3]

Group 1 - The steel sector experienced a significant surge in early trading, with major companies reaching new highs [1] - Zhongjin Mining hit an intraday record, indicating strong market performance [1] - Shandong Steel, Linggang Co., Anyang Steel all reached the daily limit up, showcasing robust investor interest [1] Group 2 - Baogang Co., Jiugang Hongxing, Hualing Steel, Liugang Co., and Chongqing Steel also saw notable increases, reflecting a broader positive trend in the steel industry [1]

Core Viewpoint - The steel sector has shown significant strength, with companies like Lingang Co. and Anyang Steel hitting the daily limit up, indicating positive market sentiment and performance in the industry [1] Industry Summary - The steel sector collectively strengthened, with multiple stocks such as Lingang Co., Anyang Steel, Jiu Steel Hongxing, Shandong Steel, Ansteel, and Sangang Min Guang rising over 5% [1] - As of February 10, a total of 27 listed companies in the steel sector released earnings forecasts, with 15 companies reporting positive net profits attributable to shareholders, representing 55.5% of the companies that issued forecasts [1] - The profit range for these companies is reported to be between 0.07 billion to 3 billion [1]

Group 1 - The latest price of stainless steel plate is 12,725.00 yuan per ton as of February 10, with a 10.41% increase over the last 60 days [2][4] - Relevant manufacturers include Benxi Steel Plate (000761), Taiyuan Iron & Steel (000825), Jiuli Special Materials (002318), Yongxing Materials (002756), Xining Special Steel (600117), Nanjing Steel (600282), Jiuquan Iron & Steel (600307), Fushun Special Steel (600399), Wujin Stainless Steel (603878), and Yongjin Co., Ltd. (603995) [2][4] Group 2 - Cyclical stocks refer to publicly listed companies in raw material production, whose profits are significantly affected by fluctuations in raw material prices [2][4] - Utilizing the price fluctuation data from the business community to identify buying signals for cyclical stocks before quarterly and annual reports is an important method for investing in cyclical stocks [2][4]

Core Insights - The visit by Ni Fengyao, Chairman of Shandong Donghong Group, focused on urban lifeline construction and smart pipeline industry development [1][3] - The collaboration aims to leverage the strengths of both Donghong Group and Jiugang Group in high-end materials and smart manufacturing [5] Group 1: Company Collaboration - The delegation conducted in-depth research on Jiugang Group's industrial resources and project capabilities, analyzing strategic opportunities in the western region [5] - Discussions included industrial cooperation, scientific research collaboration, and market development [3][5] - Donghong Group plans to utilize its research and market advantages in the pipeline industry to align with national strategies and local strengths [5] Group 2: Industry Development - The delegation visited various facilities, including Jiugang Group's high-performance pipeline materials and urban water supply systems [3] - The focus was on understanding production processes, market applications, and the overall planning of urban lifeline safety projects [3] - Jiugang Group is actively promoting transformation and industrial upgrades, particularly in high-end materials and intelligent manufacturing [5] Group 3: Future Initiatives - The city’s development and reform commission, housing and urban-rural development bureau, and investment promotion service center will prioritize project execution and enterprise support [5] - There is a commitment to enhance collaboration with Donghong Group to achieve substantial results in industrial cooperation [5]

Group 1 - AVIC Chengfei is a core subsidiary of China Aviation Industry Group, specializing in the research and development of military fighter jets and trainer aircraft, holding a leading position in the aviation equipment manufacturing sector [1] - The company has successfully provided key structural components for various domestic commercial rocket enterprises and has participated in multiple commercial space launch missions, gaining high industry recognition for its technical reliability and product stability [1] - With the accelerated development of commercial aerospace, the company is expected to benefit from the increasing demand for aerospace structural components and special materials, expanding its market share significantly [1] Group 2 - AVIC Xifei is a major manufacturer of military transport aircraft, bombers, and early warning aircraft, possessing top-tier technical strength in the aviation equipment manufacturing field [2] - The company has actively expanded its commercial aerospace business by providing core products such as structural components and lightweight parts for commercial rockets, meeting the industry's demand for high reliability [2] - As the frequency of commercial space launches continues to rise, the company aims to deepen its innovation in aerospace technology and solidify its position as a core supplier in the commercial aerospace structural component sector [2] Group 3 - Xiamen Xiangyu is a leading bulk commodity supply chain service provider, leveraging its unique location in the Xiamen Free Trade Zone to build a global logistics, trade, and financial service network [3] - The company has successfully provided fuel transportation and supply chain support services for multiple domestic commercial rocket launch missions, gaining wide recognition from industry clients [3] - With the acceleration of global commercial aerospace layout, the demand for cross-border transportation and supply chain services for aerospace materials is expected to grow significantly [3] Group 4 - Hisense Visual is a domestic leader in display technology, with a comprehensive industrial layout from panel manufacturing to terminal products, holding international leadership in high-resolution display and laser display technologies [4] - The company has provided customized display components for domestic commercial satellite projects, meeting stringent aerospace-grade requirements and gaining high recognition from aerospace enterprises [4] - As the construction of low-orbit satellite constellations accelerates, the demand for spaceborne optical equipment is expected to grow significantly, positioning the company to benefit from this trend [4] Group 5 - Far East Holdings is a leading enterprise in the cable and superconducting materials sector, with strong technical capabilities and a comprehensive industrial chain [5] - The company has successfully provided core cable products for multiple domestic commercial rocket launch missions, gaining wide recognition for its technical performance and product quality [5] - As commercial aerospace equipment evolves towards intelligence, lightweight, and high power, the demand for high-performance cables and superconducting materials is expected to continue to grow [5] Group 6 - AVIC Heavy Machinery is a core supplier in the aerospace forging sector, possessing advanced forging technology and a complete processing system [6] - The company has provided key forged products for various commercial rocket enterprises, participating in multiple key commercial aerospace launch projects [6] - With the increasing frequency of commercial rocket launches, the demand for high-end alloy forgings is expected to continue to rise, allowing the company to expand its production capacity in this area [6] Group 7 - Taiyuan Iron and Steel is a leading enterprise in the stainless steel industry, with global-leading production technology and a large capacity scale [7] - The company has provided core stainless steel materials for multiple domestic commercial aerospace projects, meeting aerospace-grade standards and gaining recognition from aerospace enterprises [7] - As the demand for high-end stainless steel and special alloy materials continues to grow, the company plans to deepen its research and development in aerospace-specific materials [7] Group 8 - Jiugang Hongxing is a leading enterprise in the steel industry in Northwest China, with a complete steel production industrial chain [8] - The company has provided customized steel products for several commercial aerospace projects, gaining industry recognition for its technical performance [8] - With the scale development of commercial aerospace equipment, the demand for high-strength steel is expected to continue to grow, prompting the company to optimize its production processes [8] Group 9 - Wind Power Equipment and Aerospace Supporting Equipment is a key enterprise in the field, with strong technical capabilities and a comprehensive production system [9] - The company has provided structural components for commercial rockets and precision processing parts for aerospace ground equipment, gaining industry recognition [9] - As the frequency of commercial rocket launches increases, the demand for precision structural components is expected to continue to grow [9] Group 10 - Yiyang Technology is a leading enterprise in the field of high-end castings and forgings, with a complete production system [10] - The company has provided engine castings for domestic commercial rocket enterprises, participating in the supply of satellite thrusters [10] - With the development of commercial rockets towards high thrust and reusability, the demand for high-temperature alloy castings is expected to continue to grow [10]