Group 1 - The core point of the announcement is the transfer of shares from the controlling shareholder Wang Jianhua to Zhang Qi due to a marital property division, resulting in a non-trading transfer of 60,593,352 shares, which accounts for 9.29% of the company's total share capital [1] - Before the transfer, Wang Jianhua held 152,168,236 shares (23.33% of total share capital), and after the transfer, he holds 91,574,884 shares (14.04% of total share capital) [1] - The transfer does not involve market reduction, does not trigger a mandatory bid, and does not change the controlling shareholder or actual controller of the company, ensuring no harm to the company or minority investors [1] Group 2 - The company emphasizes compliance with relevant regulations regarding shareholder and director share reductions, including the Securities Law and the Shanghai Stock Exchange's self-regulatory guidelines [2]

证券代码：603421 证券简称：鼎信通讯 公告编号：2025-035 近日公司收到王建华先生的通知，王建华先生已取得中国证券登记结算有限 责任公司出具的《证券过户登记确认书》，其直接持有的60,593,352股（占公司 总股本的9.29%）公司股份已通过证券非交易过户的方式过户登记至张启名下， 相关手续已办理完毕。 本次证券非交易过户前后，张启女士、王建华先生及其一致行动人持有公司 股份情况如下： | 股东 名称 | 本次权益变动前 | | | 本次权益变动后 | | | --- | --- | --- | --- | --- | --- | | | 股数（股） | 占总股本比例（%） | | 股数（股） | 占总股本比例（%） | | 曾繁忆 | 176,189,440 | | 27.02 | 176,189,440 | 27.02 | | 王建华 | 152,168,236 | | 23.33 | 91,574,884 | 14.04 | | 张启 | 0 | | 0 | 60,593,352 | 9.29 | 注：上述股份数占总股本的比例如有差异，是由于四舍五入所造成。 1 青岛鼎信通讯股份有限公司 ...

证券代码：603421 证券简称：鼎信通讯 公告编号：2025-034 青岛鼎信通讯股份有限公司 重要内容提示： 案件所处的诉讼阶段：一审判决未生效； 上市公司所处的当事人地位：被告； 涉案的金额：一审判决赔付金额合计 11,735.45 元（不含诉讼费等相关 费用）； 是否会对上市公司损益产生负面影响：本案尚处一审判决阶段，案件当 事双方可以在规定期限内申请上诉。公司将在法定上诉期间内，经综合研判、评 估后决定是否就一审判决提起上诉。案件判决结果尚存在不确定性，目前暂无法 判断对公司本期或期后利润的影响，敬请广大投资者注意投资风险。 青岛鼎信通讯股份有限公司（以下简称"公司"）此前已披露关于投资者诉 公司证券虚假陈述责任纠纷的诉讼事项及进展情况，详见公司 2024 年 8 月 31 日于《上海证券报》和上海证券交易所网站（www.sse.com.cn）披露的《鼎信通 讯关于收到<应诉通知书>的公告》（公告编号：2024-052）、2025 年 2 月 8 日 披露的《鼎信通讯关于投资者诉讼事项进展公告》（公告编号：2025-006）及 2025 年 5 月 29 日披露的《鼎信通讯关于投资者诉讼事项的进展公 ...

证券代码：603421 证券简称：鼎信通讯 公告编号：2025-033 青岛鼎信通讯股份有限公司 关于投资者诉讼事项的进展公告 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： 是否会对上市公司损益产生负面影响：本案尚处一审判决阶段，案件当 事双方可以在规定期限内申请上诉。公司将在法定上诉期间内，经综合研判、评 估后决定是否就一审判决提起上诉。案件判决结果尚存在不确定性，目前暂无法 判断对公司本期或期后利润的影响，敬请广大投资者注意投资风险。 青岛鼎信通讯股份有限公司（以下简称"公司"）此前已披露关于投资者诉 公司证券虚假陈述责任纠纷的诉讼事项及进展情况，详见公司 2024 年 8 月 31 日于《上海证券报》和上海证券交易所网站（www.sse.com.cn）披露的《鼎信通 讯关于收到<应诉通知书>的公告》（公告编号：2024-052）及 2025 年 2 月 8 日 披露的《鼎信通讯关于投资者诉讼事项进展公告》（公告编号：2025-006）。 近日，公司收到山东省青岛市中级人民法院（以下简称"青岛中院"）送达 ...

Group 1 - Weiling Co., Ltd. announced that its subsidiary Tianjin Changling Mining Partnership acquired 74.3% of Hunan Linwu Jiayu Mining Co., Ltd. for 220 million yuan, focusing on non-ferrous and black metal mining and smelting [1] - Zhongnong Lihua plans to acquire at least 50% of Taizhou Agricultural Materials Co., Ltd., which will become a subsidiary upon completion of the acquisition [1] - Chaohongji is planning to issue H-shares on the Hong Kong Stock Exchange, with details yet to be finalized [1][2] Group 2 - Hong Sifang's subsidiary plans to invest approximately 1.49 billion yuan in a new production base in Suizhou High-tech Industrial Development Zone [3] - Shangwei New Materials announced that its major shareholder Jin Feng Investment Holdings intends to reduce its stake by up to 3%, equating to 12.1 million shares [4] - Yihe Jiaye has changed its name to Beijing Ruimaite Medical Technology Co., Ltd., effective from May 21 [5][6] Group 3 - Huaxi Energy reported that its controlling shareholder has been detained and is under investigation, with no longer holding any positions in the company [7][8] - Aofei Entertainment plans to invest 10 million yuan in a partnership for equity investment in Shenzhen Xuanyuan Technology Co., Ltd. [9] - Hangzhou Electric plans to reduce its shares by up to 1.93%, equating to 13.36 million shares [10] Group 4 - Jiuhua Tourism intends to raise up to 500 million yuan through a private placement for various projects, including hotel renovations and transportation upgrades [11] - Dingxin Communications elected Liu Min as the new chairman following the resignation of Wang Jianhua [12] - Jiewate plans to acquire 40.89% of Nanjing Tianyi Hexin Electronics for 319 million yuan [13] Group 5 - Darui Electronics intends to acquire 80% of Dongguan Weisi Technology Co., Ltd. through cash purchase and capital increase [14] - Tianzhihang's shareholders plan to reduce their stakes by up to 3%, with each shareholder intending to sell 679,000 shares [15][16] - ST Shilong will lift its risk warning and change its stock name to Shilong Industrial, with trading limits adjusted from 5% to 10% [17] Group 6 - Ningde Times announced the listing of its H-shares on the Hong Kong Stock Exchange, raising approximately 35.33 billion HKD [19][20] - Mingyang Electric's shareholders plan to reduce their stakes by up to 3.01%, totaling 941,000 shares [21] - Bohai Leasing intends to transfer 100% of Global Sea Containers Ltd. for 1.75 billion USD, focusing on optimizing its debt structure [21]

Group 1 - Zhaoyi Innovation plans to issue H-shares and list on the Hong Kong Stock Exchange, considering the interests of existing shareholders and market conditions [3] - ST Zhongdi has decided to abandon the commercial opportunity for the Jiageng Ke Yi City land project, with the controlling shareholder planning to develop the project instead [4] - Xichang Electric Power expects a reduction of approximately 5.4 million yuan in net profit for 2025 due to adjustments in the time-of-use electricity pricing mechanism [5] Group 2 - Sanfu New Materials intends to invest 620 million yuan in a project for high-safety dry electrode battery key materials and high-frequency electronic information composite materials [6] - Weifu High-Tech's subsidiary plans to establish a joint venture with Baolong Technology to expand the active suspension motor hydraulic pump business [7] - Yulong Co., Ltd. will have its stock delisted on May 27, 2025, following a decision by the Shanghai Stock Exchange [8] Group 3 - Chen'an Technology's shareholder is transferring 6.27% of the company's shares to Hefei Guotou, aiming to introduce strategic investors [9] - Huamao Technology is planning to acquire a 100% stake in Fuchuang Youyue, with stock trading suspended for up to 10 trading days [11] - Baolong Technology's subsidiary will collaborate with Weifu High-Tech's subsidiary to develop core components for the active suspension system [12] Group 4 - Zhongnong Lihua intends to acquire at least 50% of Taizhou Agricultural Supplies, enhancing its product and service range [13] - Weiling Co., Ltd.'s subsidiary has successfully acquired 74.3% of Jiayu Mining for 220 million yuan, focusing on expanding into the non-ferrous metal resource sector [14][15] - Hengshi Technology's subsidiary has been approved for public transfer of shares on the New Third Board [16] Group 5 - Xiang Teng New Materials plans to acquire an additional 12.5% stake in its subsidiary Shanghai Shangda for 25.3 million yuan [17] - ST Texin has extended its employee stock ownership plan by 12 months, reflecting confidence in the company's long-term development [18] - Baili Electric has issued a risk warning regarding its stock price increase, indicating no significant changes in fundamentals [19] Group 6 - Hu Silicon Industry plans to acquire minority stakes in three semiconductor companies for approximately 7.04 billion yuan [20][21] - Demais plans to change its controlling shareholder, leading to a temporary suspension of stock trading [22] - FAW Fuwei has received a notice from a well-known new energy brand for a project expected to generate 1.06 billion yuan in total sales over its lifecycle [23] Group 7 - Hangyang Co. plans to establish a subsidiary for a large modular cryogenic equipment manufacturing project with an estimated investment of 557 million yuan [24] - Jiewate intends to acquire 40.89% of Tianyi Hexin for 319 million yuan, enhancing its product line in the signal chain category [25] - Dingxin Communications has elected a new chairman following the resignation of the previous chairman [26][27] Group 8 - Aofei Entertainment plans to invest 10 million yuan in a partnership to indirectly invest in AI robotics company Xuan Yuan Technology [28] - Huaxi Energy's controlling shareholder has been detained, but the company states that operations remain normal [29] - Yihe Jiaye will change its stock name to "Ruimaite" starting May 21 [30] Group 9 - Zhongjin Environment will change its name to "Southern Pump Industry" effective May 21 [31] - Hong Sifang's subsidiary plans to invest approximately 1.49 billion yuan in a new chemical materials and fertilizers industrial park [32] - Buchang Pharmaceutical's subsidiary has signed a research agreement for MF59 adjuvant with a pharmaceutical company [33] Group 10 - Hongjing Technology has signed a service contract worth 597 million yuan for a smart computing project [34] - Zhuojin Co. has won a bid for a soil remediation project worth 67.68 million yuan [35] - Xinjiang Jiaojian has been awarded a contract for a highway project valued at 451 million yuan [36] Group 11 - China National Materials Energy's subsidiary has signed a contract for an EPC project in Uzbekistan worth approximately 1.252 billion yuan [37] - Ruixin Microelectronics' shareholder plans to reduce its stake by up to 2% [38] - Shanghai Yizhong's shareholder also plans to reduce its stake by up to 2% [39] Group 12 - Sanyou Medical's controlling shareholder plans to reduce its stake by up to 1.44% [40] - Hangdian Co.'s controlling shareholder plans to reduce its stake by up to 1.93% [41] - Shangwei New Materials' shareholder plans to reduce its stake by up to 3% [42] Group 13 - Mingchen Health plans to repurchase shares worth between 30 million and 50 million yuan [43] - Jiuhua Tourism plans to raise up to 500 million yuan through a private placement for various projects [44] - Yuegui Co. plans to raise up to 900 million yuan for several projects [46]

因工作需要，王建华先生申请辞去董事长及审计委员会委员的职务，继续担 任公司董事、提名委员会委员职务。为保障董事会正常运作，青岛鼎信通讯股份 有限公司（以下简称"公司"）于 2025 年 5 月 20 日召开第五届董事会第十一次 会议，审议通过了《关于选举董事长的议案》和《关于调整董事会审计委员会及 薪酬与考核委员会成员的议案》，同意选举刘敏先生为公司董事长、审计委员会 委员，同时薪酬与考核委员会委员由曾繁忆先生调整为刘敏先生，任期自公司董 事会审议通过之日起至第五届董事会任期届满。刘敏先生简历详见附件。 调整前后董事会审计委员会、薪酬与考核委员会成员组成如下： 证券代码：603421 证券简称：鼎信通讯 公告编号：2025-032 青岛鼎信通讯股份有限公司 调整前 调整后 关于变更董事长及调整部分董事会专门委员会 田昆如（主任委员）、董桂武、 田昆如（主任委员）、董 成员的公告 审计委员会 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。 王建华 桂武、刘敏 刘敏先生生于 1971 年，中国国籍、清华大学建筑学专业博士，清华大学 ...

一、 董事会会议召开情况 青岛鼎信通讯股份有限公司（下称"公司"）第五届董事会第十一次会议通 知于 2025 年 5 月 15 日以书面和电子邮件方式发出，会议于 2025 年 5 月 20 日以 现场结合通讯的方式召开。应参与表决董事 8 人，实际参与表决董事 8 人。会议 符合《公司法》和《公司章程》的有关规定。公司董事王建华先生主持本次会议， 公司监事、高级管理人员列席会议。 证券代码：603421 证券简称：鼎信通讯 公告编号：2025-031 青岛鼎信通讯股份有限公司 第五届董事会第十一次会议决议公告 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。 表决结果：同意 8 票；反对 0 票；弃权 0 票。 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《鼎 信通讯关于变更董事长及调整部分董事会专门委员会成员的公告》。 表决结果：同意 8 票；反对 0 票；弃权 0 票； 特此公告。 青岛鼎信通讯股份有限公司董事会 二、 董事会会议审议情况 经与会董事认真讨论研究，以记名投票表决方式一致通过 ...

青岛鼎信通讯股份有限公司 关于变更董事长及调整部分董事会专门委员会 成员的公告 证券代码：603421 证券简称：鼎信通讯 公告编号：2025-032 董事会战略委员会及提名委员会成员不变。 特此公告！ 青岛鼎信通讯股份有限公司董事会 2025 年 5 月 21 日 附件： 刘敏先生简历 刘敏先生生于 1971 年，中国国籍、清华大学建筑学专业博士，清华大学五 道口金融学院 EMBA。2001 年 9 月至 2013 年 12 月任青岛市规划局副局长、党组 成员；2014 年 1 月至 2022 年 1 月任保利（青岛）实业有限公司董事长、党委书 记、保利山西房地产开发有限公司董事长。2022 年 1 月至 2024 年 12 月任保利 天津房地产开发有限公司、保利河北房地产开发有限公司、保利山西房地产开发 有限公司、董事长、党委书记；2025 年 3 月至今在公司总裁办任职。 截至目前，刘敏先生未直接或间接持有公司股份，与公司控股股东、实际控 制人、持股 5%以上股东及其他董事、监事、高级管理人员无关联关系，不存在 《公司法》规定的不得担任公司的董事、监事、高级管理人员的情形；未被中国 证监会采取证券市场禁 ...

青岛鼎信通讯股份有限公司（下称"公司"）第五届董事会第十一次会议通 知于 2025 年 5 月 15 日以书面和电子邮件方式发出，会议于 2025 年 5 月 20 日以 现场结合通讯的方式召开。应参与表决董事 8 人，实际参与表决董事 8 人。会议 符合《公司法》和《公司章程》的有关规定。公司董事王建华先生主持本次会议， 公司监事、高级管理人员列席会议。 二、 董事会会议审议情况 经与会董事认真讨论研究，以记名投票表决方式一致通过以下议案： 1、审议通过《关于选举董事长的议案》 证券代码：603421 证券简称：鼎信通讯 公告编号：2025-031 青岛鼎信通讯股份有限公司 第五届董事会第十一次会议决议公告 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。 一、 董事会会议召开情况 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《鼎 信通讯关于变更董事长及调整部分董事会专门委员会成员的公告》。 表决结果：同意 8 票；反对 0 票；弃权 0 票； 1 特此公告。 青岛鼎信通讯股份有限公司董事会 ...