证券代码：300641 证券简称：正丹股份 公告编号：2026-003 江苏正丹化学工业股份有限公司 关于使用部分闲置募集资金进行现金管理的进展公告 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。 江苏正丹化学工业股份有限公司（以下简称"公司"）于 2025 年 12 月 9 日召 开了第五届董事会第十三次会议，审议通过了《关于使用部分闲置募集资金和自 有资金进行现金管理的议案》，同意公司在确保不影响募集资金投资计划正常进 行以及公司日常经营所需资金的前提下，使用不超过人民币 10,000 万元（含本 数）的闲置募集资金和不超过人民币 220,000 万元（含本数）的自有资金进行现 金管理，有效期自 2026 年 1 月 1 日至 2026 年 12 月 31 日，在前述额度和期限范 围内，资金可循环滚动使用。公司保荐机构中国国际金融股份有限公司针对上述 使用闲置募集资金进行现金管理的事项出具了无异议的核查意见。具体内容详见 公司于 2025 年 12 月 10 日在巨潮资讯网（http://www.cninfo.com.cn）披露的《关 于使用部分闲置募集资 ...

证券日报网讯 2月25日，正丹股份发布公告称，公司于2025年12月9日召开第五届董事会第十三次会 议，并于2025年12月25日召开2025年第三次临时股东会，审议通过了《关于变更回购股份用途并注销暨 减少注册资本的议案》。公司已于近日完成上述注册资本工商变更登记和《公司章程》备案事宜，并取 得了镇江市市场监督管理局换发的《营业执照》。 （文章来源：证券日报） ...

1、 统一社会信用代码：913211007965274641 证券代码：300641 证券简称：正丹股份 公告编号：2026-002 江苏正丹化学工业股份有限公司 关于公司完成工商变更登记的公告 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。 江苏正丹化学工业股份有限公司（以下简称"公司"）于 2025 年 12 月 9 日召 开第五届董事会第十三次会议，并于 2025 年 12 月 25 日召开 2025 年第三次临时 股东会，审议通过了《关于变更回购股份用途并注销暨减少注册资本的议案》， 具体内容详见公司分别于 2025 年 12 月 10 日和 2025 年 12 月 25 日在巨潮资讯网 （www.cninfo.com.cn）披露的《关于变更回购股份用途并注销暨减少注册资本的 公告》和《2025 年第三次临时股东会决议公告》。 公司已于近日完成上述注册资本变更登记和《公司章程》备案事宜，并取得 了镇江市市场监督管理局换发的《营业执照》，相关登记信息如下 8、 经营范围：许可项目：危险化学品生产；货物进出口；技术进出口；进 出口代理；道路货物运输（含危险 ...

Company Overview - Zhengdan Co., Ltd. completed the repurchase and cancellation of 7.1375 million shares on January 7, 2026, which accounts for 1.34% of the total share capital, resulting in a new total share capital of 526 million shares [1] Stock Performance - Over the past 7 trading days, Zhengdan's stock price exhibited volatility, with a single-day increase of 4.34% on February 9, closing at 20.91 yuan and a trading volume of 465 million yuan; however, it adjusted in the following two trading days, closing at 20.28 yuan on February 11, reflecting a cumulative fluctuation of 2.63% from the opening price on February 6 [2] - Trading activity varied, with a turnover rate of 4.30% on February 9, which dropped to 1.70% on February 11; the financing balance increased by 0.04 billion yuan over the past five days, reaching 3.45 billion yuan as of February 10 [2] Institutional Insights - Current institutional interest in Zhengdan is relatively low, with a neutral sentiment in public opinion; the fund holding ratio is only 0.02%, and there have been no recent institutional surveys or rating adjustments [3] - In the chemical sector, there is increased capital attention due to price increase logic, but there are no significant catalysts for the individual stock of Zhengdan [3]

Group 1 - The core viewpoint of the news is that Zhengdan Co., Ltd. experienced a stock price increase of 5.04%, reaching 21.05 CNY per share, with a trading volume of 367 million CNY and a turnover rate of 3.41%, resulting in a total market capitalization of 11.063 billion CNY [1] - Zhengdan Co., Ltd. is located in Zhenjiang, Jiangsu Province, and was established on January 23, 2007, with its listing date on April 18, 2017. The company specializes in the research, production, and sales of high-end environmentally friendly new materials [1] - The main business revenue composition of Zhengdan Co., Ltd. includes 89.59% from anhydrides and esters, 10.40% from high-boiling aromatic solvents, and 0.01% from other supplementary products [1] Group 2 - Among the top ten circulating shareholders of Zhengdan Co., Ltd., a fund under Southern Fund ranks first. The Southern CSI 1000 ETF (512100) reduced its holdings by 29,400 shares in the third quarter, holding a total of 2.4356 million shares, which accounts for 0.46% of the circulating shares [2] - The Southern CSI 1000 ETF (512100) was established on September 29, 2016, with a latest scale of 78.996 billion CNY. It has achieved a 6% return this year, ranking 1533 out of 5580 in its category, and a 35.04% return over the past year, ranking 1803 out of 4290 [2] - The fund manager of Southern CSI 1000 ETF (512100) is Cui Lei, who has a cumulative tenure of 7 years and 96 days, managing a total fund asset size of 137.02 billion CNY, with the best fund return during the tenure being 279.97% and the worst being -15.93% [2]

Core Viewpoint - The company, Zhengdan Co., stated that isooctanol is one of the raw materials for producing tri(2-ethylhexyl) trimellitate (TOTM), but it is not a product of the company [2] Group 1 - The company has established a systematic response mechanism that includes forward pricing, dynamic procurement, and supply chain coordination to mitigate the impact of raw material price fluctuations on operations [2] - The company will dynamically adjust product selling prices based on raw material price fluctuations to ensure the stability of profitability [2] - Investors are advised to refer to the company's periodic reports for specific operational conditions [2]

证券日报网讯 2月5日，正丹股份在互动平台回答投资者提问时表示，公司高度重视产品的市场拓展及 新领域应用。 （文章来源：证券日报） ...

Price Trends - The latest price of isooctanol as of January 28 is 7700.00 CNY per ton, reflecting a significant increase over various time frames: 6.70% over the last 5 days, 9.48% over the last 10 days, 9.74% over the last 15 days, 11.86% over the last 30 days, and 17.26% over the last 60 days [2][4] Related Producers - Key producers in the isooctanol market include: - Luxi Chemical (000830) - Chengzhi Co., Ltd. (000990) - Huachang Chemical (002274) - Zhengdan Co., Ltd. (300641) - Hualu Hengsheng (600426) - China Petroleum (601857) - Jianye Co., Ltd. (603948) [2][4]

Group 1 - The company, Zhengdan Co., Ltd. (stock code: 300641), confirmed its commitment to comply with legal regulations regarding information disclosure [1] - The company stated that production and sales data will be disclosed in relevant periodic reports [1]

Core Viewpoint - Zhengdan Co., Ltd. is actively engaged in research and development in the field of high-performance materials, particularly focusing on polyimide and its key raw materials, including pyromellitic dianhydride [1] Group 1 - The company is monitoring technological trends in high-performance materials [1] - Ongoing R&D efforts are being made for key raw materials related to polyimide [1] - Future updates on R&D progress will be disclosed in periodic reports [1]