Core Viewpoint - Jianlong Micro-Nano announced a change in its signing accountants for the 2025 financial report and internal control audit, with new appointees from Lixin Accounting Firm [2] Group 1: Company Announcement - Jianlong Micro-Nano received a letter from Lixin Accounting Firm regarding the change of signing accountants [2] - The original signing accountants, Wu Xue and Dong Xia, have been replaced due to work arrangement changes [2] - The new signing accountants for the 2025 financial report and internal control audit are Li Yongjiang and Yan Zheng [2]

Core Viewpoint - The company has successfully implemented an "internationalization strategy," resulting in significant overseas revenue growth, with 26.21% of total revenue coming from international markets in the first three quarters of 2025 [1]. Group 1 - The company has achieved scale sales of its products in over 80 countries and regions globally, including EU countries [1]. - The internationalization strategy has been a key focus for the company in recent years, leading to positive outcomes [1].

Core Viewpoint - The announcement from Luoyang Jianlong Micro-Nano New Materials Co., Ltd. indicates that major shareholders, Zhongzheng Kaiyuan Venture Capital Fund and Minquan County Innovation Industry Investment Fund, have completed their share reduction plan, selling a total of 2,901,752 shares, which accounts for 3% of the company's total equity, and realizing approximately 98.66 million yuan in cash [1][2]. Summary by Sections Reduction Plan Implementation Overview - The reduction plan was disclosed on September 15, 2025, with a maximum limit of 3% of the total shares, equating to 300,175.2 shares. The plan was executed through centralized bidding and block trading, and it was completed by January 14, 2026, matching the planned upper limit [2]. Details of Shareholder Reductions - Zhongzheng Kaiyuan reduced 2,237,000 shares from October 20, 2025, to January 14, 2026, with a total amount of 76.74 million yuan, at a price range of 30.85 to 41.60 yuan per share. After the reduction, they hold 2,609,331 shares, representing 2.6078% of the total [3]. - Minquan County Innovation reduced 664,752 shares during the same period, with a total amount of 21.91 million yuan, also within the price range of 30.85 to 41.60 yuan per share. They now hold 713,773 shares, which is 0.7133% of the total [3]. Compliance of Reduction - The reduction adhered to relevant laws and regulations, and the actual reduction matched the previously disclosed plan. After the reduction, the combined shareholding of both funds decreased from 7.81% to 3.3211% of the total shares. The company stated that this reduction is a normal behavior due to the expiration of the funds and will not significantly impact the company's governance or ongoing operations [4].

| 证券代码：688357 | 证券简称：建龙微纳 | 公告编号：2026-003 | | --- | --- | --- | | 转债代码：118032 | 转债简称：建龙转债 | | 洛阳建龙微纳新材料股份有限公司 合计持股 5%以上股东减持股份结果公告 本公司董事会、全体董事及相关股东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、准确性和完整性依法承担法律 责任。 重要内容提示： 大股东及董监高持有的基本情况 本次减持计划实施前，河南中证开元创业投资基金（有限合伙）（以下简称"中 证开元"）直接持有洛阳建龙微纳新材料股份有限公司（以下简称"公司"） 4,846,331 股，占公司总股本的 4.84%；民权县创新产业投资基金（有限合伙）（以 下简称"民权创投"）直接持有公司 1,378,525 股，占公司总股本的 1.38%。上述 股份均为无限售流通股且来源于公司首次公开发行前及上市后资本公积金转增 股本取得。 减持计划的实施结果情况 2025 年 9 月 15 日，公司在上海证券交易所网站（www.sse.com.cn）披露了 《关于合计持股 5%以上股东减持股份计划公 ...

| 证券代码：688357 | 证券简称：建龙微纳 | 公告编号：2026-004 | | --- | --- | --- | | 转债代码：118032 | 转债简称：建龙转债 | | 闫正先生，2014 年开始从事上市公司审计业务，2014 年加入立信，2021 年 成为中国注册会计师，2025 年开始为公司提供审计服务，近三年未签署/复核上 市公司审计报告。 三、本次新任签字注册会计师的独立性和诚信情况 洛阳建龙微纳新材料股份有限公司 关于变更签字注册会计师的公告 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、准确性和完整性依法承担法律责任。 洛阳建龙微纳新材料股份有限公司（以下简称"公司"）于 2025 年 4 月 25 日 召开第四届董事会第十次会议及第四届监事会第七次会议，审议通过了《关于续 聘会计师事务所的议案》，同意续聘立信会计师事务所（特殊普通合伙）（以下简 称"立信"）为公司 2025 年度审计机构，该议案已经 2025 年 5 月 20 日召开的公 司 2024 年年度股东大会审议通过。具体内容详见公司分别于 2025 年 4 月 ...

| 转债代码：118032 | 转债简称：建龙转债 | | | --- | --- | --- | | 证券代码：688357 | 证券简称：建龙微纳 | 公告编号：2026-002 | 洛阳建龙微纳新材料股份有限公司 关于合计持股 5%以上股东权益变动至 5%以下并触 及 5%刻度的提示性公告 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、准确性和完整性依法承担法律责任。 重要内容提示： 本次权益变动为公司合计持股 5%以上股东河南中证开元创业投资基金 （有限合伙）（以下简称"中证开元"）、民权县创新产业投资基金（有限合伙） （以下简称"民权创投"）实施已披露的股份减持计划，不触及要约收购。 本次权益变动后，中证开元、民权创投及一致行动人安阳普闰高新技术 产业投资基金（有限合伙）（以下简称"普闰高新"）、郑州融英企业管理咨询中 心（普通合伙）（以下简称"郑州融英"）合计持有公司股份数量 5,002,894 股， 占公司总股本的 4.9999%，不再是公司持股 5%以上的股东。 本次权益变动为公司合计持股 5%以上非第一大股东减持，不会导致公司 控股股东 ...

洛阳建龙微纳新材料股份有限公司 简式权益变动报告书 上市公司名称：洛阳建龙微纳新材料股份有限公司 股票上市地点：上海证券交易所 股票简称：建龙微纳 股票代码：688357 信息披露义务人1：河南中证开元创业投资基金（有限合伙） 住所：洛阳市洛阳新区开元大道伊川农商行科研大楼17层 通讯地址：郑州市郑东新区如意西路中国平煤神马金融资本运营中心 信息披露义务人2：民权县创新产业投资基金（有限合伙） 住所：民权县民生路中段路东 通讯地址：郑州市郑东新区如意西路中国平煤神马金融资本运营中心 信息披露义务人3：安阳普闰高新技术产业投资基金（有限合伙） 住所：安阳市文峰区富源街2号 通讯地址：郑州市郑东新区如意西路中国平煤神马金融资本运营中心 信息披露义务人4：郑州融英企业管理咨询中心（普通合伙） 住所：河南自贸试验区郑州片区(郑东)商务外环路20号20层5号 通讯地址：郑州市郑东新区如意西路中国平煤神马金融资本运营中心 股份变动性质：股份减少，合计持股比例降至5%以下 签署日期：2026年1月5日 1 信息披露义务人声明 一、本报告书系信息披露义务人依据《中华人民共和国证券法》《上市公司 收购管理办法》《公开发行证券的 ...

Core Viewpoint - Jianlong Micro-Nano announced a share reduction plan involving major shareholders, which will decrease their collective stake below 5% without triggering a mandatory takeover bid [1] Group 1: Shareholder Actions - Shareholders Zhongzheng Kaiyuan, Minquan Chuangtou, and their concerted parties, including Purun Gaoxin and Zhengzhou Rongying, plan to reduce their holdings by 892,103 shares, representing 0.8916% of the total share capital [1] - Specifically, Zhongzheng Kaiyuan will reduce its holdings by 884,551 shares, while Minquan Chuangtou will reduce by 7,552 shares [1] Group 2: Post-Reduction Holdings - After the share reduction, the total holdings of the aforementioned shareholders will decrease from 5,894,997 shares to 5,002,894 shares, lowering their ownership percentage from 5.8915% to 4.9999% [1] - Following this reduction, these shareholders will no longer be classified as holding more than 5% of the company's shares [1] Group 3: Implications of the Reduction - The share reduction will not trigger a mandatory takeover bid and will not result in any changes to the controlling shareholder or actual controller of the company [1] - The reduction plan has not yet been fully implemented [1]

重要内容提示： | 证券代码：688357 | 证券简称：建龙微纳 | 公告编号：2026-001 | | --- | --- | --- | | 转债代码：118032 | 转债简称：建龙转债 | | 洛阳建龙微纳新材料股份有限公司 可转债转股结果暨股份变动公告 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、准确性和完整性依法承担法律责任。 累计转股情况：洛阳建龙微纳新材料股份有限公司（以下简称"公司"） 向不特定对象发行的可转换公司债券"建龙转债"自 2023 年 9 月 14 日开始转股， 截至 2025 年 12 月 31 日，"建龙转债"共有人民币 112,000 元已转换为公司股票， 转股数量 1,544 股，占"建龙转债"转股前公司已发行股份总额的 0.00186%。 未转股可转债情况：截至 2025 年 12 月 31 日，"建龙转债"尚未转股的可 转债余额为人民币 699,888,000 元，占"建龙转债"发行总量的 99.9840%。 本季度转股情况：自 2025 年 10 月 1 日至 2025 年 12 月 31 日期间，"建 龙 ...

Group 1 - The core transaction on December 30 involved a block trade of 400,000 shares of Jianlong Micro-Nano, with a transaction value of 13.2 million yuan and a trading price of 33.00 yuan, reflecting a discount of 0.87% compared to the closing price of the day [2][3] - Over the past three months, Jianlong Micro-Nano has recorded a total of 9 block trades, amounting to a cumulative transaction value of 47.51 million yuan [2] - The closing price of Jianlong Micro-Nano on the day of the transaction was 33.29 yuan, which represented a decline of 3.31%, with a turnover rate of 1.78% and a total trading volume of 59.84 million yuan [2] Group 2 - The latest margin financing balance for Jianlong Micro-Nano is 140 million yuan, which has increased by 2.725 million yuan over the past five days, reflecting a growth rate of 1.99% [3] - The net outflow of main funds for Jianlong Micro-Nano on the day was 1.6375 million yuan, while the stock has seen a cumulative increase of 4.03% over the past five days, with a total net inflow of 8.6338 million yuan [2]