浙江三美化工股份有限公司 关于使用部分闲置募集资金进行现金管理 到期赎回的公告 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法律责任。 浙江三美化工股份有限公司（以下简称"公司"）于 2025 年 3 月 24 日召开 第六届董事会第十八次会议和第六届监事会第十六次会议，分别审议通过《关于 使用闲置募集资金进行现金管理的议案》，同意公司在确保募投项目所需资金和 保证募集资金安全的前提下，使用闲置募集资金进行现金管理，授权期限内单日 最高余额不超过 1.90 亿元，授权期限自该次董事会审议通过之日起 12 个月。具 体内容详见公司于 2025 年 3 月 25 日在上海证券交易所网站（www.sse.com.cn） 披露的《公司关于使用闲置募集资金进行现金管理的公告》(公告编号：2025-017)。 公司于 2026 年 3 月 24 日召开第七届董事会第六次会议，审议通过《关于使 用闲置募集资金进行现金管理的议案》，同意公司在确保募投项目所需资金和保 证募集资金安全的前提下，使用闲置募集资金进行现金管理，授权期限内单日最 高余额不超过 ...

Investment Rating - The investment rating for the chemical raw materials industry is "Positive" (maintained) [1] Core Insights - The fluorochemical industry is experiencing a resilient demand for refrigerants, with expectations for a new round of price increases due to external geopolitical factors [4][23] - The fluorochemical index increased by 2.03% during the week of March 23-27, outperforming the Shanghai Composite Index by 3.13% and the CSI 300 Index by 3.45% [6][34] - The industry is entering a long-term prosperity cycle, with significant growth potential across the entire fluorochemical value chain, including raw materials like fluorite, refrigerants, and high-end fluorinated materials [23] Summary by Sections 1. Fluorochemical Market Overview - Fluorite prices have shown a recovery, with the average market price for 97% wet fluorite at 3,430 CNY/ton as of March 27, up 0.94% from the previous week [7][18] - The average price for March is 3,392 CNY/ton, down 9.00% year-on-year, and the average for 2026 is 3,342 CNY/ton, down 4.00% from 2025 [18] 2. Refrigerant Market Trends - As of March 27, prices for various refrigerants are stable, with R32 at 63,500 CNY/ton, R125 at 55,000 CNY/ton, and R134a at 58,500 CNY/ton [20][21] - The domestic refrigerant market is stable, with preparations for the summer sales season beginning, although purchasing behavior remains cautious due to high prices and geopolitical uncertainties [22][23] 3. Beneficiary Companies - Recommended stocks include Jinshi Resources, Juhua Co., Sanmei Co., and Haohua Technology, with other beneficiaries being Dongyangguang, Yonghe Co., Dongyue Group, and Xinzhoubang [10][23]

Investment Rating - The investment rating for the chemical raw materials industry is "Positive" (maintained) [1] Core Views - The fluorochemical industry is experiencing a resilient demand for refrigerants, with expectations for a new round of price increases due to external geopolitical factors [4][23] - The fluorochemical index has shown a 2.03% increase, outperforming the Shanghai Composite Index by 3.13% and the CSI 300 Index by 3.45% during the week of March 23 to March 27, 2026 [6][34] Summary by Sections 1. Fluorochemical Industry Overview - The price of fluorite has been recovering, with the average market price for 97% wet fluorite at 3,430 CNY/ton as of March 27, 2026, reflecting a 0.94% increase from the previous week [7][18] - The average price for March 2026 is 3,342 CNY/ton, down 4.00% from the average price in 2025 [18] 2. Refrigerants - As of March 27, 2026, the prices for various refrigerants are as follows: R32 at 63,500 CNY/ton, R125 at 55,000 CNY/ton, R134a at 58,500 CNY/ton, and R22 at 17,500 CNY/ton, with most prices remaining stable compared to the previous week [20][21] - The domestic refrigerant market is stable, with preparations for the summer sales season beginning, although purchasing behavior remains cautious due to high prices and external uncertainties [22][23] 3. Beneficiary Stocks - Recommended stocks include Jinshi Resources, Juhua Co., Sanmei Co., and Haohua Technology, with other beneficiaries being Dongyangguang, Yonghe Co., Dongyue Group, and Xinzhoubang [10][23]

长江证券承销保荐有限公司 关于浙江三美化工股份有限公司 使用闲置募集资金进行现金管理的核查意见 长江证券承销保荐有限公司（以下简称"长江保荐"或"保荐机构"）作为 浙江三美化工股份有限公司（以下简称"三美股份"或"公司"）首次公开发行 股票并上市的保荐机构，根据《证券发行上市保荐业务管理办法》《上市公司募 集资金监管规则》《上海证券交易所股票上市规则》《上海证券交易所上市公司自 律监管指引第 1 号——规范运作》等相关法律法规的要求，对三美股份使用闲置 募集资金进行现金管理的事项进行了审慎核查，具体核查情况如下： 一、投资情况概述 （一）投资目的 因公司募集资金投资项目需根据使用计划逐步投入，部分募集资金在一定时 间内将处于闲置状态。为提高募集资金使用效率，合理利用募集资金，在不影响 公司募集资金投资项目实施、募集资金使用计划正常进行和保证募集资金安全的 前提下，公司将合理使用闲置募集资金进行现金管理，增加股东回报。 （二）投资金额 公司拟使用额度不超过人民币 1.20 亿元的闲置募集资金进行现金管理。在 授权期限内任一时点的现金管理金额不超过该额度。在上述额度及期限内，资金 可循环滚动使用。 2、经公司于 ...

证券代码：603379 证券简称：三美股份 公告编号：2026-015 浙江三美化工股份有限公司 关于使用闲置募集资金进行现金管理的公告 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法律责任。 重要内容提示： 投资种类：安全性高、流动性好的保本型产品（包括但不限于结构性存 款、大额存单、定期存款、单位协定存款、收益凭证等）； 投资金额：授权期限内单日最高余额不超过 1.20 亿元； 已履行及拟履行的审议程序：浙江三美化工股份有限公司（以下简称"公 司"）于 2026 年 3 月 24 日召开第七届董事会第六次会议，审议通过《关于使用 闲置募集资金进行现金管理的议案》。本事项不构成关联交易，亦无需提交股东 会审议； 特别风险提示：公司拟购买的现金管理产品为结构性存款、大额存单、 定期存款、单位协定存款、收益凭证等安全性高、流动性好的保本型产品，但不 排除该产品受宏观经济、政策因素、市场利率变动等风险影响，导致产品的实际 收益不及预期。 一、投资情况概述 （一）投资目的 因公司募集资金投资项目需根据使用计划逐步投入，部分募集资金在一定时 ...

证券代码：603379 证券简称：三美股份 公告编号：2026-016 浙江三美化工股份有限公司 关于"提质增效重回报"专项行动方案的半年度评估 报告 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法律责任。 为贯彻落实国务院《关于进一步提高上市公司质量的意见》要求，积 极响应上海证券交易所《关于开展沪市公司"提质增效重回报"专项行动的倡议》， 促进公司高质量发展和投资价值提升，保护投资者尤其是中小投资者合法权益， 浙江三美化工股份有限公司（以下简称"公司"）结合自身发展战略和实际经营 情况，于 2025 年 8 月 23 日披露了《公司"提质增效重回报"专项行动方案》（以 下简称"行动方案"）。自行动方案发布以来，公司积极推动落实相关工作，现 将行动方案半年度执行及评估情况报告如下： 一、坚守氟化工主业，追求高质量发展 2025 年，公司持续深耕氟化工领域，围绕公司发展战略，把握市场主 动，积极推进生产经营各项工作，实现了经营业绩的稳步增长与核心竞争 力的实质提升。报告期内，第二代氟制冷剂（HCFCs）生产配额进一步削 减，第三代氟制 ...

证券代码：603379 证券简称：三美股份 公告编号：2026-014 浙江三美化工股份有限公司 第七届董事会第六次会议决议公告 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法律责任。 浙江三美化工股份有限公司（以下简称"公司"）于 2026 年 3 月 24 日以现 场结合通讯表决方式在公司会议室召开第七届董事会第六次会议。会议通知已于 2026 年 3 月 19 日以书面、电子邮件等方式向全体董事发出。本次会议应出席董 事 9 人，实际出席董事 9 人。本次会议由董事长胡淇翔主持，高管列席会议。本 次会议召开符合《公司法》和《公司章程》的有关规定。 经与会董事审议，本次会议以投票表决的方式审议通过了以下议案： 一、审议通过《关于使用闲置募集资金进行现金管理的议案》。 表决结果：同意 9 票，反对 0 票，弃权 0 票。 本议案在提交董事会审议前，已经董事会审计委员会、董事会战略委员会审 议并一致通过。 具体内容详见公司同日披露于上海证券交易所网站（www.sse.com.cn）的《公 司关于使用闲置募集资金进行现金管理的公告》。 ...

Investment Rating - The report maintains an "Overweight" rating for the basic chemical industry, expecting the industry index to outperform the market index by more than 10% in the next six months [27]. Core Insights - The basic chemical index fell by 5.2% over the past two weeks, underperforming the CSI 300 index by 3.8 percentage points, ranking 24th among 31 industries. Year-to-date, the index has risen by 9.3%, outperforming the CSI 300 index by 10.3 percentage points, ranking 6th among 31 industries [11][14]. - All sub-sectors of the basic chemical index experienced declines in the past two weeks, with non-metal materials down 7.3%, agricultural chemicals down 6.9%, and chemical products down 6.8% [13]. - Among the 408 listed companies in the basic chemical index, 110 saw their stock prices rise, with notable increases from Zhongfu Shenying (100.0%), Chitianhua (56.2%), and Sanfangxiang (49.5%). Conversely, 295 companies experienced declines, with Zhenhua Co., Cangzhou Dahua, and Xinjinlu seeing significant drops of 27.7%, 24.8%, and 24.7% respectively [14] [20]. Summary by Sections Market Review - As of March 19, the basic chemical index has shown a year-to-date increase of 9.3%, while the sub-sectors have varied performance, with chemical raw materials up 24.2% and non-metal materials up 19.6% [11][13]. Important Company Announcements - Wanhua Chemical reported a revenue of 203.235 billion yuan for 2025, a year-on-year increase of 11.62%, while its net profit decreased by 3.88% [20]. - Chuanjinno announced a revenue of 4.075 billion yuan for 2025, a year-on-year increase of 27.04%, with net profit soaring by 157.77% [20]. Key Industry News - The Ministry of Industry and Information Technology (MIIT) announced a pilot program for hydrogen energy applications, focusing on enhancing the economic viability of green ammonia and methanol technologies [20][24]. - The MIIT held a roundtable for small and medium enterprises in the new materials sector, emphasizing the need for innovation in advanced materials and strategic materials [23][24]. Industry Outlook - The report suggests focusing on companies like Sanmei Co. (603379) and Juhua Co. (600160) due to expected profit increases driven by rising refrigerant prices [23][25].

Group 1 - Wanhua Chemical (600309) is a global leader in the polyurethane industry, with core businesses covering MDI, TDI, and polyether polyols, while also extending into petrochemicals, new materials, and fine chemicals. The company has established a comprehensive industrial chain from raw materials to end products, maintaining a leading market share in MDI due to its scale and technological barriers. It is expanding into high-performance materials and new energy materials, aligning with the trends in new energy and high-end manufacturing, which opens up long-term growth opportunities [1][25] - Juhua Co., Ltd. (600160) is a leading enterprise in the domestic fluorochemical sector, with core businesses including fluorochemicals, chlor-alkali chemicals, and petrochemical materials. The company has a significant capacity in fluorinated refrigerants and is expanding into electronic chemicals and photovoltaic fluorinated materials, gradually breaking through overseas technological monopolies. Its comprehensive layout in the fluorochemical industry chain and strong compliance and cost advantages position it well for growth [2][26] - Satellite Chemical (002648) is a leader in the domestic acrylic acid and ester industry, focusing on acrylic acid, high polymer emulsions, and functional polymer materials. The company is accelerating its layout in photovoltaic-grade EVA and POE new energy materials, leveraging its propane dehydrogenation process to build an integrated industrial chain. Its strong cost control and alignment with the growth of the photovoltaic and lithium battery industries provide sustainable development momentum [3][27] Group 2 - Hoshine Silicon Industry (603260) is a global leader in industrial silicon and organic silicon, with core businesses covering industrial silicon, organic silicon, and graphite electrodes. The company has a leading production capacity in industrial silicon and a comprehensive product range in organic silicon, benefiting from energy-rich production bases. Its complete industrial chain layout and focus on high-purity silicon for photovoltaics align with trends in new energy and high-end manufacturing, offering significant long-term growth potential [4][28] - Adisseo (600299) is a global leader in animal nutrition additives, with core products including methionine and vitamins widely used in livestock farming. The company has established a stable supply system and significant technological and cost advantages, while also expanding into biotechnology and functional food sectors. Its stable performance and low sensitivity to macroeconomic fluctuations enhance its competitive position in the global feed additive industry [5][29] - Zhejiang Longsheng (600352) is a global leader in the dye industry, with core businesses covering dyes, intermediates, and water-reducing agents. The company has a leading market share in disperse and reactive dyes, supported by an integrated industrial chain and strong cost control. Its diversified business structure enhances risk resilience, while its expansion into hydrogen energy and environmental protection projects strengthens its competitive position in the global dye and fine chemical industry [6][30] Group 3 - Haohua Technology (600378) is a domestic leader in high-end fluorinated materials and electronic chemicals, with core businesses including fluororesins, fluororubbers, and electronic-grade chemicals. The company benefits from deep technological reserves and has achieved some degree of import substitution. Its focus on high-end chemical materials aligns with national strategic emerging industries, providing long-term growth support [7][31] - Sanmei Co., Ltd. (603379) is a key player in the domestic fluorochemical sector, focusing on refrigerants, foaming agents, and fluorinated salts. The company has established an integrated fluorochemical industrial chain and is expanding into environmentally friendly refrigerants. Its stable cash flow and strong downstream demand support its competitive position in the domestic fluorochemical market [8][32] - Meihua Biological (600873) is a global leader in the amino acid industry, with core products including monosodium glutamate and amino acids widely used in food, feed, and pharmaceuticals. The company has a leading market share in MSG and lysine, supported by its advanced fermentation technology and cost advantages. Its expansion into pharmaceutical-grade amino acids and biodegradable materials enhances its competitive position in the global amino acid and fermentation industry [9][33]

Investment Rating - The investment rating for the chemical raw materials industry is "Positive" (maintained) [1] Core Insights - The fluorochemical industry is showing signs of recovery, with a notable increase in prices for refrigerants and raw materials, driven by supply constraints and rising demand [4][23] - The market for refrigerants is expected to experience a new round of price increases, despite short-term challenges posed by geopolitical factors in the Middle East [4][23] - The overall sentiment in the fluorochemical sector remains optimistic, with potential for significant growth across various segments, including high-end fluorinated materials and fine chemicals [23] Summary by Sections 1. Fluorochemical Market Overview - The average market price for wet fluorite (97%) is 3,393 CNY/ton, reflecting a 0.18% increase week-on-week, but a 9.25% decrease year-on-year [18] - The supply of fluorite is tight due to environmental inspections and production slowdowns in key regions, which is expected to support prices [19] 2. Refrigerant Pricing Trends - As of March 13, 2026, the prices for various refrigerants are as follows: - R32: 63,500 CNY/ton (domestic), 62,500 CNY/ton (export) - R125: 55,000 CNY/ton (domestic), 51,000 CNY/ton (export) - R134a: 58,500 CNY/ton (domestic), 58,000 CNY/ton (export) - R22: 17,500 CNY/ton (domestic), 15,500 CNY/ton (export) [20][21] - The market is witnessing a gradual recovery in prices for refrigerants, with R125 showing a 7.84% increase in domestic pricing [20][21] 3. Industry Dynamics - The fluorochemical index has decreased by 2.1% in the week of March 9-13, 2026, underperforming against major indices such as the Shanghai Composite and CSI 300 [36] - The overall market sentiment is positive, with expectations for a rebound in prices as demand from downstream sectors increases [22][23] 4. Recommended Stocks - Key stocks to watch include: - Jinshi Resources (fluorite) - Juhua Co. (refrigerants, fluororesins) - Sanmei Co. (refrigerants) - Haohua Technology (refrigerants, fluororesins, fine fluorochemicals) [10][23]