山西大禹生物工程股份有限公司 会计师事务所选聘制度 本公司及董事会全体成员保证公告内容的真实、准确和完整，没有虚假记载、 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 带法律责任。 一、 审议及表决情况 山西大禹生物工程股份有限公司（以下简称"公司"）于 2025 年 8 月 6 日召 开了第四届董事会第四次会议，审议通过了《关于制定及修订公司部分内部管理 制度的议案》之子议案《关于制定<会计师事务所选聘制度>的议案》。议案表决 结果：同意 7 票；反对 0 票；弃权 0 票。本子议案尚需提交公司股东会审议。 二、 分章节列示制度主要内容： 证券代码：871970 证券简称：大禹生物 公告编号：2025-088 第一章 总 则 第一条 为规范山西大禹生物工程股份有限公司（以下简称"公司"）选聘（包 括新聘、续聘、变更）会计师事务所的行为，切实维护股东利益，提高财务信息 质量，根据《中华人民共和国公司法》、《中华人民共和国证券法》（以下简称"《证 券法》"）、《国有企业、上市公司选聘会计师事务所管理办法》等法律、行政法 规、部门规章、规范性文件以及《山西大禹生物工程股份有限公司章程》（ ...

证券代码：871970 证券简称：大禹生物 公告编号：2025-104 山西大禹生物工程股份有限公司 重大信息内部报告制度 重大信息内部报告制度 第一章 总则 第一条 为规范山西大禹生物工程股份有限公司（以下简称"公司"）的重大 信息内部报告工作，保证公司内部重大信息的快速传递、归集和有效管理，及时、 准确、全面、完整的披露信息，维护投资者合法权益，根据《中华人民共和国公 司法》、《中华人民共和国证券法》《北京证券交易所股票上市规则》等法律法规、 《山西大禹生物工程股份有限公司信息披露管理制度》及《公司章程》的要求， 结合公司实际情况，制定本制度。 第二条 本制度所称重大信息是指公司在生产经营活动中发生或将要发生对 投资人的投资决策产生较大影响，或对公司股票及衍生品种的交易价格已经或可 本公司及董事会全体成员保证公告内容的真实、准确和完整，没有虚假记载、 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 带法律责任。 一、 审议及表决情况 山西大禹生物工程股份有限公司（以下简称"公司"）于 2025 年 8 月 6 日召 开了第四届董事会第四次会议，审议通过了《关于制定及修订公司部分内部 ...

Market Overview - The animal health sector increased by 0.65% on August 4, with BioShares leading the gains [1] - The Shanghai Composite Index closed at 3583.31, up 0.66%, while the Shenzhen Component Index closed at 11041.56, up 0.46% [1] Stock Performance - BioShares (600201) closed at 8.75, rising by 2.70% with a trading volume of 327,100 shares and a turnover of 280 million yuan [1] - Jinhe Biology (002688) closed at 7.34, up 2.51%, with a trading volume of 666,900 shares and a turnover of 485 million yuan [1] - Ruipu Biology (300119) closed at 21.58, increasing by 1.27%, with a trading volume of 72,800 shares and a turnover of 155 million yuan [1] - KQ Biology (688526) closed at 17.00, up 1.01%, with a trading volume of 29,600 shares and a turnover of 49.88 million yuan [1] - Other notable stocks include Dayu Biology (871970) at 10.40 (+0.97%) and Zeng Caike (603566) at 15.00 (+0.87%) [1] Capital Flow - The animal health sector saw a net inflow of 68.12 million yuan from institutional investors, while retail investors experienced a net outflow of 58.45 million yuan [2] - The main capital inflow and outflow for specific stocks include: - Jinhe Biology: 70.12 million yuan inflow from main investors, 33.36 million yuan outflow from retail investors [3] - BioShares: 15.45 million yuan inflow from main investors, 8.61 million yuan outflow from retail investors [3] - Shilian Biology (688098): 3.79 million yuan inflow from main investors, 27.89 million yuan outflow from retail investors [3]

Market Overview - On July 30, the North Exchange A-shares trading volume reached CNY 27.01 billion, an increase of CNY 0.59 billion from the previous trading day[1] - The North Exchange 50 Index closed at 1439.64, down 1.75%, with a PE_TTM of 67.33 times[1] - The North Exchange Specialized and New Index closed at 2459.66, down 1.57%[1] Stock Performance - Out of 268 companies on the North Exchange, 81 rose, 4 remained flat, and 183 fell[1] - The top five gainers were: Yun Chuang Data (28.1%), Ke Li Co. (9.6%), Knight Dairy (9.3%), Fang Yi Pharmaceutical (9.2%), and Da Yu Biological (7.6%)[1] - The top five losers were: Ji Kang Instruments (-12.0%), Wu Xin Tunnel Equipment (-8.7%), Tie Tuo Machinery (-8.1%), Hui Tong New Materials (-7.0%), and Na Ke Nuo Er (-5.7%)[1] Investment Insights - Market focus was on themes such as innovative drugs, AI hardware, and military industry, with notable performance in these sectors[3] - The innovative drug sector showed increased activity due to policy support from the National Medical Insurance Administration[3] - The macro policy direction from the Central Political Bureau meeting supports long-term capital investment in specialized and new enterprises, indicating potential structural opportunities for growth-oriented companies[3] Risk Factors - Potential risks include policy regulatory risks, North Exchange policies falling short of expectations, and intensified industry competition[3]

证券之星消息，7月31日动物保健板块较上一交易日下跌0.43%，大禹生物领跌。当日上证指数报收于 3573.21，下跌1.18%。深证成指报收于11009.77，下跌1.73%。动物保健板块个股涨跌见下表： 从资金流向上来看，当日动物保健板块主力资金净流出1611.97万元，游资资金净流出6281.9万元，散户 资金净流入7893.87万元。动物保健板块个股资金流向见下表： | 代码 | 名称 | 主力净流入(元) | 主力净占比 游资净流入 (元) | | 游资净占比 散户净流入 (元) | | 散户净占比 | | --- | --- | --- | --- | --- | --- | --- | --- | | 300871 回盛生物 | | 6787.00万 | 7.85% | -4042.91万 | -4.68% | -2744.09万 | -3.17% | | 600201 | 生物股份 | 2619.98万 | 9.14% | -534.51万 | -1.86% | -2085.47万 | -7.28% | | 002868 *ST绿康 | | 940.97万 | 10.50% | -518.20 ...

Group 1 - The report highlights a reversal in the pig farming dilemma, indicating a potential recovery in the industry due to policy-driven capacity adjustments and supply reductions [2][8]. - The current pig cycle is in a de-stocking phase, with the number of breeding sows in China decreasing from a peak of 41.42 million in 2024 to 40.43 million in June 2025, a decline of approximately 2.4% [22][23]. - The Ministry of Agriculture and Rural Affairs has set a target to reduce the breeding sow population by about 1 million heads, aiming for a total of 39.5 million [22][23]. Group 2 - Short-term pig prices are expected to decline due to reduced second fattening and seasonal demand, but a long-term increase is anticipated if the breeding sow population stabilizes below 39.5 million [26][29]. - As of July 25, 2025, the profit from self-breeding pig farming was 62.16 yuan per head, a decrease of 31.61% from the previous week, while the loss from purchasing piglets expanded to 71.39 yuan per head [32][33]. - The report emphasizes that large-scale enterprises will have more stable profitability compared to smallholders due to cost advantages and industry chain synergies [32]. Group 3 - The report identifies two key companies in the pig farming industry: Yongshun Biological and Dayu Biological, detailing their business models and market positions [3][35]. - Yongshun Biological focuses on the research, production, and sales of veterinary biological products, with over 30 types of vaccines for pigs and poultry, maintaining over 90% of its revenue from vaccine sales [3][37]. - Dayu Biological specializes in feed additives and veterinary drugs, with its feed additive and feed businesses accounting for 65.39% and 29.74% of its revenue, respectively [50][56]. Group 4 - The report provides an overview of the pig farming industry chain, which includes upstream breeding, feed production, and veterinary supplies, midstream modern farming practices, and downstream processing and distribution [21][24]. - The entire industry chain is heavily influenced by technological advancements, management practices, disease control, and is subject to environmental regulations and government oversight [21][24].

Market Overview - The Shanghai Composite Index closed at 3615.72 points, above the five-day moving average, with a change of 0.17% [1] - The total trading volume of A-shares reached 1,870.976 billion yuan [1] Stocks Breaking the Five-Day Moving Average - A total of 370 A-shares have surpassed the five-day moving average today [1] - Notable stocks with significant deviation rates include: - Shiyan Institute (设研院) with a deviation rate of 15.41% and a daily increase of 20.00% [2] - *ST Yun Chuang (*ST云创) with a deviation rate of 12.66% and a daily increase of 28.14% [2] - Zhenan Technology (震安科技) with a deviation rate of 9.13% and a daily increase of 11.29% [2] - Other stocks with smaller deviation rates include: - Guoyao Co. (国药股份), Jintour Environment (劲旅环境), and Triangle Tire (三角轮胎), which have just crossed the five-day moving average [1] Detailed Stock Performance - The following stocks have notable performance metrics: - Shiyan Institute (300732): Latest price 10.62 yuan, five-day moving average 9.20 yuan, turnover rate 19.58% [2] - *ST Yun Chuang (835305): Latest price 18.08 yuan, five-day moving average 16.05 yuan, turnover rate 22.46% [2] - Zhenan Technology (300767): Latest price 15.18 yuan, five-day moving average 13.91 yuan, turnover rate 18.77% [2] - Additional stocks with significant performance include: - *ST Tianwei (688511): Latest price 20.59 yuan, five-day moving average 19.14 yuan, daily increase of 10.34% [2] - Shenma Electric (603530): Latest price 29.23 yuan, five-day moving average 27.21 yuan, daily increase of 10.01% [2]

证券之星消息，7月30日动物保健板块较上一交易日下跌0.46%，生物股份领跌。当日上证指数报收于 3615.72，上涨0.17%。深证成指报收于11203.03，下跌0.77%。动物保健板块个股涨跌见下表： | 代码 | 名称 | 收盘价 | 涨跌幅 | 成交量(手) | 成交额(元) | | | --- | --- | --- | --- | --- | --- | --- | | 871970 | 大禹生物 | 10.98 | 7.65% | 7.08万 | 7555.51万 | | | 002868 | *ST绿康 | 26.73 | 4.99% | 2.78万 | 7294.48万 | | | 839729 | 永顺生物 | 10.02 | 1.83% | 4.19万 | 4168.45万 | | | 300871 | 回盛生物 | 22.22 | 1.37% | 16.18万 | | 3.63亿 | | 002688 | 金河生物 | 7.22 | 0.84% | 42.68万 | | 3.06亿 | | 688098 | 申联生物 | 6.90 | 0.73% | 10.01万 | 6919.84 ...

从资金流向上来看，当日动物保健板块主力资金净流出9984.08万元，游资资金净流出2164.17万元，散户 资金净流入1.21亿元。动物保健板块个股资金流向见下表： 证券之星消息，7月29日动物保健板块较上一交易日下跌0.5%，驱动力领跌。当日上证指数报收于 3609.71，上涨0.33%。深证成指报收于11289.41，上涨0.64%。动物保健板块个股涨跌见下表： | 代码 | 名称 | 收盘价 | 涨跌幅 | 成交量(手) | 成交额(元) | | | --- | --- | --- | --- | --- | --- | --- | | 002868 | *ST绿康 | 25.46 | 2.91% | 2.25万 | | 5731.13万 | | 688098 | 申联生物 | 6.85 | 1.33% | 10.41万 | | 7137.24万 | | 603566 | 普莱柯 | 15.23 | 0.40% | 5.03万 | | 7579.24万 | | 002688 | 金河生物 | 7.16 | 0.14% | 36.15万 | | 2.59亿 | | 688526 | 科前生物 | 17.2 ...

证券代码：871970 证券简称：大禹生物 公告编号：2025-069 二、 减持计划的实施结果 （一） 股东因以下原因披露减持计划实施结果： √减持计划实施完毕 □减持时间区间届满 | | | 减持数量 | | | | | 减持 | 当前持 | 当前持 | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 股东 | 减持数 | 占总股本 | 减持 | 减持 | 减持价格 | 已减持总 | 计划 | | | | 名称 | 量（股） | 比例（%） | 方式 | 期间 | 区间 | 金额（元） | 完成 | 股数量 | 股比例 | | | | | | | | | | （股） | （%） | | | | | | | | | 情况 | | | | | | | | 2025 年 7 月 | | | | | | | 厚扬 | 250,000 | 0.2245% | 集中竞价 | 16 日至 | 9.35-10.14 元 | 2,379,110.93 | 是 | 5,514,040 | 4.9515% | | 天灏 | | | | 2025 年 ...