针对大规模水面养殖资产难以直接全面盘点的特点，公司阐述了其盘点方法。公司定期（通常在报告期 末或下年初）组织内部水产管理人员、财务人员并会同外部水产专家，前往各捕捞现场进行核查。盘点 主要依赖于核定关键参数（如存活率、综合生长系数）并结合数学模型来估算期末结存数量。为验证此 方法的准确性，公司还引入了中国科学院水生生物研究所的专家团队，利用水声学频差技术对鱼类资源 进行探测。该技术通过宽频回声探测仪收集声学数据，分析鱼类大小、分布密度，从而对账面数量进行 佐证。公司指出，近三年的探测结果与账面数量的误差率均在正负10%至20%的合理区间内，总体误差 率控制在10%以内，认为其参数设定和计算方法具有合理性。 在减值测试方面，公司解释了近一年又一期未对消耗性生物资产计提跌价准备的原因。公司定期计算各 类生物资产的可变现净值，其依据是预计售价（参考近期或临近月份平均销售价格）减去预计至完工时 尚需发生的捕捞费和相关税费。公司将测算出的可变现净值与存货的账面成本进行比较。根据披露的测 算过程，无论是2024年末还是2025年6月末，公司各渔场消耗性生物资产的可变现净值均高于其账面成 本，因此未发现减值迹象，无需计提存 ...

Core Viewpoint - Dahu Aquaculture Co., Ltd. plans to change its name to "Dahu Health Industry Co., Ltd." to better reflect its current business structure and strategic focus on health products and medical services [1][3] Company Announcement Summary - The name change and adjustment of business scope have been approved by the board and will be submitted for shareholder approval [1][3] - The company aims to remove beverage production from its business scope and add services related to nursing institutions, health care, and artificial intelligence applications [1][3] Financial Performance Highlights - For the first half of 2025, Dahu reported revenue of 426 million yuan, a year-on-year decline of 14.40% [3] - The net profit attributable to the parent company was a loss of 2.57 million yuan, which represents a year-on-year improvement of 11.28 million yuan [3] - Medical service revenue was 186 million yuan, down 8.36% year-on-year, while revenue from aquatic products was 196 million yuan, down 17.60% year-on-year [3]

证券代码：600257 证券简称：大湖股份 公告编号：2025-041 大湖水殖股份有限公司关于收到 上海证券交易所《关于大湖水殖股份有限公司 2025 年半年度报告的信息 披露监管问询函》的回复公告 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。 大湖水殖股份有限公司 (以下简称"大湖股份"或"公司") 于近日收到上海证 券交易所（以下简称"上交所"）下发的《关于大湖水殖股份有限公司 2025 年半年 度报告的信息披露监管问询函》（上证公函【2025】1390 号）(以下简称"《半年报 问询函》")。公司对《半年报问询函》关注的问题进行了认真核查和分析，现就相 关问题回复如下： 【回复】 一、按鲜活水产品、冰冻水产品、医疗服务、白酒的细分类别列示报告期内营 业收入、营业成本、毛利率、净利润及同比变动情况，并结合各业务原料采购价格、 产品销售价格及所处行业变化等，量化分析报告期内营业收入下滑、归母净利润减 亏的原因： 公司 2025 年上半年营业收入 4.26 亿元，较去年同期下滑 14.4%；2025 年上半年 归母 ...

关于对大湖水殖股份有限公司 2025 年半年度报告的信息披露监管问询函 的专项说明 众环专字(2025)1100628 号 上海证券交易所上市公司管理一部： 贵部于 2025 年 9 月 25 日发出的《关于大湖水殖股份有限公司 2025 年半年度报 告的信息披露监管问询函》（上证公函【2025】1390 号，以下简称"监管问询函"）已 收悉，我们就监管问询函所涉及 2024 年度报告的有关事项进行了认真核查，现将核 查情况作专项说明如下： 问题 1、关于主营业务及业绩。公司主要业务包括水产品、医疗服务、白酒等。 半年报披露，报告期内实现营业收入 4.26 亿元，同比下滑 14.40%，归母净利润- 257.16 万元，同比减亏 1,128.08 万元，其中医疗服务实现收入 1.86 亿元，同比下滑 8.36%，未披露其他业务板块具体数据。2024 年年报显示，公司水产品、白酒业务 收入分别 下滑 13.98%、27.08%，医疗服务业务收入同比增长 11.54%。 请公司补充披露：（ 1）按鲜活水产品、冰冻水产品、医疗服务、白酒的细分类 别列示报告期内营业收入、营业成本、毛利率、净利润及同比变动情况，并结合 ...

Core Insights - The fishing sector experienced a decline of 1.29% on October 24, with Zhongshui Fisheries leading the drop at 2.52% [1] - The Shanghai Composite Index closed at 3950.31, up 0.71%, while the Shenzhen Component Index closed at 13289.18, up 2.02% [1] Sector Performance - The following stocks in the fishing sector showed notable declines: - Zhanzi Island (002069) closed at 3.94, down 0.51% - Guolian Aquatic Products (300094) closed at 3.57, down 1.11% - Kaichuang International (600097) closed at 11.75, down 1.18% - Haodangjia (600467) closed at 2.44, down 1.21% - Dahuhua (600257) closed at 5.61, down 1.23% - Zhongshui Fisheries (000798) closed at 8.12, down 2.52% [1] Capital Flow Analysis - The fishing sector saw a net outflow of 13.98 million yuan from main funds and 10.57 million yuan from speculative funds, while retail investors had a net inflow of 24.54 million yuan [1] - Detailed capital flow for individual stocks includes: - Zhanzi Island: Main funds net inflow of 2.47 million yuan, speculative funds net inflow of 1.33 million yuan, retail net outflow of 3.80 million yuan - Zhongshui Fisheries: Main funds net inflow of 1.07 million yuan, speculative funds net inflow of 0.33 million yuan, retail net outflow of 1.40 million yuan - Kaichuang International: Main funds net outflow of 2.00 million yuan, speculative funds net outflow of 7.64 million yuan, retail net inflow of 9.65 million yuan - Dahuhua: Main funds net outflow of 2.68 million yuan, speculative funds net outflow of 2.61 million yuan, retail net inflow of 5.30 million yuan - Haodangjia: Main funds net outflow of 3.41 million yuan, speculative funds net outflow of 1.47 million yuan, retail net inflow of 4.88 million yuan - Guolian Aquatic Products: Main funds net outflow of 9.42 million yuan, speculative funds net outflow of 0.51 million yuan, retail net inflow of 9.92 million yuan [2]

Core Insights - The fishery sector experienced a 0.46% increase on October 23, with KaiChuang International leading the gains [1] - The Shanghai Composite Index closed at 3922.41, up 0.22%, while the Shenzhen Component Index also rose by 0.22% to 13025.45 [1] Stock Performance - KaiChuang International (600097) closed at 11.89, with a rise of 2.32% and a trading volume of 89,400 shares, amounting to a transaction value of 106 million yuan [1] - ZhongShui Fishery (000798) saw a 0.97% increase, closing at 8.33 with a trading volume of 62,700 shares and a transaction value of 51.95 million yuan [1] - DaHu Co. (600257) increased by 0.53%, closing at 5.68 with a trading volume of 122,000 shares and a transaction value of 68.95 million yuan [1] - HaoDangJia (600467) remained unchanged at 2.47, with a trading volume of 282,400 shares and a transaction value of 69.44 million yuan [1] - ZhangZiDao (002069) also remained unchanged at 3.96, with a trading volume of 89,500 shares and a transaction value of 35.24 million yuan [1] - YuanLian Aquatic Products (300094) decreased by 0.55%, closing at 3.61 with a trading volume of 248,500 shares and a transaction value of 89.31 million yuan [1] Capital Flow - The fishery sector saw a net outflow of 32.11 million yuan from main funds, while retail investors contributed a net inflow of 32.45 million yuan [1] - Detailed capital flow for key stocks indicates that KaiChuang International had a net inflow of 2.90 million yuan from main funds, while ZhongShui Fishery experienced a net outflow of 5.19 million yuan [2] - DaHu Co. and HaoDangJia also faced significant net outflows from main funds, amounting to 5.26 million yuan and 5.83 million yuan respectively [2]

Market Overview - On October 22, the fishery sector declined by 0.09%, with Zhuangzi Island leading the drop [1] - The Shanghai Composite Index closed at 3913.76, down 0.07%, while the Shenzhen Component Index closed at 12996.61, down 0.62% [1] Stock Performance - Key stocks in the fishery sector showed mixed performance, with the following closing prices and changes: - Zhongshui Fishery (000798): 8.25, +0.49% - Kaichuang International (600097): 11.62, +0.43% - Haodangjia (600467): 2.47, +0.41% - Guolian Aquatic Products (300094): 3.63, -0.27% - Dahuhua (600257): 5.65, -0.70% - Zhuangzi Island (002069): 3.96, -1.00% [1] Capital Flow - The fishery sector experienced a net outflow of 37.94 million yuan from main funds and 18.56 million yuan from speculative funds, while retail investors saw a net inflow of 56.51 million yuan [1] - Detailed capital flow for key stocks includes: - Guolian Aquatic Products: Main fund net inflow of 1.55 million yuan, retail net inflow of 2.11 million yuan - Zhongshui Fishery: Main fund net outflow of 2.70 million yuan, retail net inflow of 4.19 million yuan - Kaichuang International: Main fund net outflow of 3.48 million yuan, retail net inflow of 7.73 million yuan - Zhuangzi Island: Main fund net outflow of 4.08 million yuan, retail net inflow of 6.34 million yuan - Haodangjia: Main fund net outflow of 11.32 million yuan, retail net inflow of 15.19 million yuan - Dahuhua: Main fund net outflow of 17.90 million yuan, retail net inflow of 20.95 million yuan [2]

Core Viewpoint - Dahu Aquaculture Co., Ltd. plans to change its name to "Dahu Health Industry Co., Ltd." to better reflect its current business structure and development strategy focused on health products and healthcare services [1] Group 1: Company Name Change - The company intends to change its full name to align with its evolving business focus, as the revenue from its aquaculture business has decreased to 14.72% in 2024, while income from healthcare and aquatic product processing has increased [1] - The name change has been approved by the board and will be submitted for review at the upcoming third extraordinary general meeting of shareholders [1] Group 2: Business Scope Adjustment - The company will remove beverage production from its business scope and add services related to nursing institutions, health maintenance, and artificial intelligence application software development [1] - The final changes will be subject to approval by the Hunan Provincial Market Supervision Administration, indicating potential uncertainty [1]

Group 1 - The company Dahu Co., Ltd. announced its sponsorship as the title sponsor for the Changde division of the "Xiangchao" league through its subsidiary Hunan Deshan Wine Industry Co., Ltd. [2] - Stakeholders are encouraged to follow the performance and ranking information released by the organizing body of the Xiangchao league [2]

大湖水殖股份有限公司 2025 年第三次临时股东会 会议资料 二○二五年十月二十七日 大湖水殖股份有限公司 2025 年第三次临时股东会议程 一、现场会议召开时间：2025年10月27日（星期一）下午14:30。 网络投票时间：2025 年 10 月 27 日至 2025 年 10 月 27 日；采用 上海证券交易所网络投票系统，通过交易系统投票平台的投票时间为 股东会召开当日的交易时间段，即 9:15-9:25，9:30-11:30，13:00-15:00； 通过互联网投票平台的投票时间为股东会召开当日的 9:15-15:00。 二、现场会议召开地点：湖南省常德市武陵区建设东路 348 号泓 鑫桃林 6 号楼 21 楼会议室。 三、会议召开方式：现场投票与网络投票（上海证券交易所股东 大会网络投票系统）相结合的方式。网络投票的操作流程详见上海证 券交易所网站（www.sse.com.cn）上《大湖水殖股份有限公司关于召 开2025年第三次临时股东会的通知》。 四、主持人：董事长罗订坤先生 （八）计票人统计现场投票表决情况。 （九）宣布现场投票表决结果。 五、议程： （一）主持人宣布 2025 年第三次临时股 ...