民爆行业发展历程和产业链简析 1、行业定义 民用爆炸物品特指用于非军事目的、已被列入《民用爆炸物品品名表》中的各类火药、炸药及其制品，以及雷管、导火索等点火和起爆器材。界定民用爆 炸物品需同时满足两项条件：一是被列入《民用爆炸物品品名表》，二是实际应用于民用工程。若相关物品用于军事目的，则不属于民用爆炸物品范畴， 其管理应依据《军队工程爆破器材管理规定》执行。 民爆行业具有严格监管、较高准入门槛、明显区域化的特征，其中监管实行覆盖生产、销售、购买、运输、爆破作业全环节的许可证制度，由国防科技工 业主管部门与公安机关分工监管上下游环节；准入门槛伴随政策演变逐步提升，从禁止生产企业自销到允许凭证销售再到设置行业壁垒；区域化特征则因 仓储条件、运输安全管控的严格要求，以专业流通企业为主导，尤其在西部矿产资源经济区等区域，民爆行业需结合当地资源丰富、人口稀少、交通不便 的特点因地制宜发展，以服务当地经济建设。 2、民爆行业分类 民爆产品可分为：工业炸药及其制品、工业雷管、工业索类火工品、其它民用爆炸物品、原材料。 民爆产品分类 （来源：普华有策） 中国民爆行业发展历程 3、发展历程 中国民爆行业历经七十余年发展，从远 ...

上海久诚律师事务所股票索赔律师许峰提示，鼎信通讯（维权）（603421）虚假陈述引发的投资者索赔 案已有投资者胜诉先例，目前还在诉讼时效内，受损投资者还可起诉。（许峰律师专栏） 许峰律师提示，部分投资者发起的虚假陈述索赔诉讼已获得终审胜诉判决。许峰律师团队目前还在继续 推进后续案件的立案工作，还在继续接受其他投资者的索赔委托。 国家电网中标产品金额占公司营业收入比重较高，构成公司生产经营的外部条件发生重大变化，该事项 属于《证券法》第八十条第二款第六项规定的重大事件。鼎信通讯应依据《证券法》第八十条第一款规 定及时披露上述重大事件，但公司直至2024年3月29日晚间才发布临时公告披露上述事项。 二、鼎信通讯未及时披露控股股东、实际控制人所持股份处分情况。 专门从事股票索赔法律事务的上海久诚律师事务所主任许峰律师认为，根据前期投资者胜诉判决，在 2024年3月1日到2024年3月30日之间买入鼎信通讯股票，并且在2024年3月30日后卖出或继续持有股票的 投资者，目前还可发起索赔。（鼎信通讯维权入口） （本文由上海久诚律师事务所主任许峰律师供稿，不代表新浪财经立场。许峰律师，2008年起律师执 业，执业服务范围 ...

一、鼎信通讯未及时披露生产经营的外部条件发生重大变化 鼎信通讯于2024年2月27日知悉国家电网自2024年2月18日起对公司全部采购品类启动招标采购"熔断机 制"，并对公司涉嫌违规事项启动调查，熔断期间暂停公司全部产品、服务中标资格。"熔断机制"对公 司中标金额产生重大影响， 受损股民可至新浪股民维权平台登记该公司维权：http://wq.finance.sina.com.cn/ 关注@新浪证券、微信关注新浪券商基金、百度搜索新浪股民维权、访问新浪财经客户端、 新浪财经首页都能找到我们！ 上海久诚律师事务所股票索赔律师许峰提示，鼎信通讯（维权）（603421）虚假陈述引发的投资者索赔 案已有投资者胜诉先例，目前还在诉讼时效内，受损投资者还可起诉。（许峰律师专栏） 许峰律师提示，部分投资者发起的虚假陈述索赔诉讼已获得终审胜诉判决。许峰律师团队目前还在继续 推进后续案件的立案工作，还在继续接受其他投资者的索赔委托。 此前2024年5月9日，鼎信通讯公告收到青岛证监局《行政处罚决定书》。经查明，鼎信通讯存在以下违 法事实： 国家电网中标产品金额占公司营业收入比重较高，构成公司生产经营的外部条件发生重大变化，该事项 ...

证券日报网讯12月11日，鼎信通讯（603421）在互动平台回答投资者提问时表示，截至2025年12月10日 收盘，公司的股东户数为31669户。 ...

Shareholder Reduction - Shandong Electric Power Construction plans to reduce its stake in Liyuan New Energy by 1% [1] - Chiyao Investment and its concerted parties intend to reduce their holdings in Haomei New Materials by no more than 0.4404% [1] - Shareholder Xiang Jinyu of Aokang International aims to reduce his stake by no more than 3% [1] - The controlling shareholder of Donghua Testing and its concerted parties plan to reduce their holdings by no more than 1.99% [1] - The actual controller's concerted parties of Kute Intelligent plan to reduce their stake by no more than 2% [1] - Runke Investment intends to reduce its stake in Meixin Technology by no more than 1.6047% [1] - Guochuang Kaiyuan plans to reduce its holdings in Shanshi Network Technology by no more than 180.24 million shares [1] - The controlling shareholder of Shenzhou Information intends to reduce its stake by no more than 2.9543% [1] - Shareholder Wang Donghui of Juguang Technology plans to reduce 2.6958 million shares [1] - Shareholder Fan Jianhua of Dingxin Communications has completed the reduction of 2 million shares [1] - Shareholder Ouyang Ruiqun of Wanlang Magnetic has reduced 1.5984 million shares [1] - Shareholder Guangxin Group of Shengyi Technology has reduced 12.9101 million shares [1] - Advanced Manufacturing Fund and Beijing-Tianjin-Hebei Fund collectively reduced 1.03% of their holdings in Tianzhihang [1] Other Corporate Actions - SIRUI Technology has terminated its major asset restructuring plan and its stock has resumed trading [1] - ST Meichen and its wholly-owned subsidiary have been included in the list of dishonest executors [1]

证券代码：603421 证券简称：鼎信通讯 公告编号：2025-063 股东名称 范建华 股东身份 控股股东、实控人及一致行动人 □是 √否 直接持股 5%以上股东 □是 √否 董事、监事和高级管理人员 √是 □否 其他：无 持股数量 21,282,329股 持股比例 3.26% 当前持股股份来源 IPO 前取得：15,093,092股 一、减持主体减持前基本情况 | 集中竞价交易取得：152,000股 | | --- | | 其他方式取得：6,037,237股 | 上述减持主体无一致行动人。 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、准确性和完整性承担法律责任。 重要内容提示： 董监高持股的基本情况：本次减持计划实施前，青岛鼎信通讯股份有限 公司（以下简称"公司"）董事/高级管理人员范建华先生持有公司股份 21,282,329 股，约占公司总股本的 3.26%。 减持计划的实施结果情况：公司于 2025 年 10 月 16 日披露了《鼎信通讯 董监高减持股份计划公告》（公告编号：2025-054），公司董事/高级管理人员范 建华先生计划自 ...

Group 1 - The core point of the article is that Dingxin Communications has completed a share reduction plan by its director, Mr. Fan Jianhua, who has sold a total of 2 million shares through centralized bidding, with the plan set to conclude by December 8, 2025 [1] - As of the report, Dingxin Communications has a market capitalization of 5.2 billion yuan [1] - The revenue composition for Dingxin Communications in 2024 is as follows: Power electronics accounts for 77.21%, fire electronics for 15.81%, other businesses for 4.54%, and labor services for 2.44% [1]

青岛鼎信通讯股份有限公司 董监高提前终止减持计划暨减持股份结果公告 公司于近日收到公司董事/高级管理人员袁志双先生的通知，拟提前终止本 次减持计划。现将本次减持计划实施情况公告如下： | 股东名称 | 袁志双 | | | | --- | --- | --- | --- | | 股东身份 | 控股股东、实控人及一致行动人 | □是 | √否 | | | 直接持股 5%以上股东 | □是 | √否 | | | 董事、监事和高级管理人员 | √是 | □否 | | | 其他：无 | | | | 持股数量 | 8,647,948股 | | | | 持股比例 | 1.33% | | | | 当前持股股份来源 | IPO 前取得：6,065,891股 | | | 证券代码：603421 证券简称：鼎信通讯 公告编号：2025-062 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、准确性和完整性承担法律责任。 重要内容提示： 董监高持股的基本情况：本次减持计划实施前，青岛鼎信通讯股份有限 公司（以下简称"公司"）董事/高级管理人员袁志双先生持有公司股份 8, ...

Core Viewpoint - Dingxin Communication (603421) experienced a trading halt today with a daily turnover rate of 1.95% and a transaction amount of 97.63 million yuan, showing a price fluctuation of 9.76% [2] Trading Activity - The stock was listed on the Shanghai Stock Exchange's daily trading report due to a price deviation of 9.20%, with institutional investors net selling 1.91 million yuan [2] - The top five trading departments accounted for a total transaction amount of 64.64 million yuan, with a net buying amount of 27.28 million yuan [2][4] Institutional Participation - Among the trading departments, one institutional seat was noted, which had a net sell of 1.91 million yuan [3] - The main funds saw a net inflow of 37.39 million yuan today, with large orders contributing a net inflow of 44.48 million yuan, while large funds experienced a net outflow of 7.08 million yuan [4] Financial Performance - The company reported a revenue of 1.066 billion yuan for the first three quarters, reflecting a year-on-year decline of 52.71%, and a net loss of 336 million yuan [4]

Market Overview - A-shares experienced a strong upward movement on November 25, with major indices showing significant gains, particularly the ChiNext Index which rose over 3% at one point [1][2] - By midday, the Shanghai Composite Index increased by 1.13%, the Shenzhen Component Index rose by 2.04%, and the ChiNext Index was up by 2.60% [2] Sector Performance - The communication sector led the gains, with the index surging over 5% during the session. Notable stocks included Dekoli and Guangku Technology, both hitting the 20% limit-up, along with several others achieving over 10% gains [4][6] - The electronics sector also saw a significant rise, with the index increasing by more than 3%. Key performers included Changguang Huaxin, which hit the 20% limit-up, and several other stocks like Tengjing Technology and Haoli Technology, which rose over 14% [7][8] New Listings - A new stock, Hai'an Group, debuted on the market and saw its price surge by over 100% at one point during the session. The company specializes in the research, production, and sales of giant all-steel radial tires for construction machinery [10][12] Hong Kong Market - The Hang Seng Index also showed positive movement, briefly surpassing the 26,000-point mark. Stocks such as Xiaomi Group-W and Alibaba Health saw gains exceeding 5% [13][14] - Xianheng Construction, which recently issued a positive profit forecast, experienced a significant price increase, with its stock rising over 80% during the session [14][17]