证券代码：002452 证券简称：长高电新 长高电新科技股份公司 （Changgao Electric Group Co., Ltd.） （长沙市望城经济技术开发区金星北路三段 393 号） 向不特定对象发行可转换公司债券 上市公告书 保荐人（主承销商） （深圳市前海深港合作区南山街道桂湾五路128号前海深港基金小镇B7栋401） 公告日期：2026 年 3 月 1 长高电新科技股份公司 向不特定对象发行 A 股可转换公司债券上市公告书 第一节 重要声明与提示 长高电新科技股份公司（以下简称"长高电新"、"公司"、"本公司"或"发 行人"）及全体董事、高级管理人员保证本上市公告书的真实性、准确性、完整 性，承诺本上市公告书不存在虚假记载、误导性陈述或重大遗漏，并对其内容的 真实性、准确性和完整性承担个别及连带的法律责任。 根据《中华人民共和国公司法》（以下简称"《公司法》"）、《中华人民共和 国证券法》（以下简称"《证券法》"）等有关法律、法规的规定，本公司董事、 高级管理人员已依法履行诚信和勤勉尽责的义务和责任。 中国证券监督管理委员会（以下简称"中国证监会"）、深圳证券交易所（以 下简称"深交所"）、其他 ...

上市保荐书 华泰联合证券有限责任公司关于 长高电新科技股份公司向不特定对象发行可转换公司债券 并在主板上市之上市保荐书 深圳证券交易所： 作为长高电新科技股份公司（以下简称发行人、公司）向不特定对象发行可 转换公司债券并在主板上市的保荐人，华泰联合证券有限责任公司及其保荐代表 人已根据《中华人民共和国公司法》（以下简称《公司法》）、《中华人民共和国证 券法》（以下简称《证券法》）等法律法规和中国证券监督管理委员会（以下简称 中国证监会）及贵所的有关规定，诚实守信，勤勉尽责，严格按照依法制定的业 务规则和行业自律规范出具上市保荐书，并保证所出具文件真实、准确、完整。 现将有关情况报告如下： 一、发行人基本情况 （一）发行人概况 发行人名称：长高电新科技股份公司 注册地址：长沙市望城经济技术开发区金星北路三段 393 号 注册时间：1998 年 4 月 23 日 联系方式：0731-8858 5000 （二）发行人的主营业务 发行人主营业务包括输变电设备业务以及电力勘察设计和工程总包业务两 个板块，致力于成为"电力能源综合服务商"。输变电设备领域是发行人的核心 业务板块，主要产品包括高压开关、封闭式组合电器、成套 ...

湖南启元律师事务所 关于长高电新科技股份公司 向不特定对象发行可转换公司债券 并在深圳证券交易所上市的 法律意见书 二Ο二六年三月 湖南省长沙市芙蓉区建湘路 393 号世茂环球金融中心 63 层 410000 电话：0731-82953778 传真：0731-82953779 网站：www.qiyuan.com 致：长高电新科技股份公司 湖南启元律师事务所（以下简称"本所"）接受长高电新科技股份公司（以 下简称"长高电新"、"发行人"或"公司"）的委托，担任发行人申请向不特 定对象发行可转换公司债券（以下简称"本次发行"）的专项法律顾问。 本所已就发行人本次发行上市事宜出具了《湖南启元律师事务所关于长高电 新科技股份公司向不特定对象发行可转换公司债券的律师工作报告》（以下简称 "《律师工作报告》"）、《湖南启元律师事务所关于长高电新科技股份公司向 不特定对象发行可转换公司债券的法律意见书》（以下简称"《法律意见书》"） 等文件。 （三）本所在出具本法律意见书时，对于与法律相关的业务事项履行了法律 专业人士特别的注意义务，对其他业务事项履行了普通人一般的注意义务；对从 国家机关、具有管理公共事务职能的组织、会计 ...

证券代码：002452 证券简称：长高电新 长高电新科技股份公司 投资者关系活动记录表 编号：2026-02 | 投资者关系活动类别 | 特定对象调研 | 分析师会议 ☐ | | | | --- | --- | --- | --- | --- | | | 媒体采访 ☐ | 业绩说明会 ☐ | | | | | ☐ 新闻发布会 | ☐ 路演活动 | | | | | ☐ 现场参观 | | | | | | 单位 | 姓名 | 单位 | 姓名 | | | 中泰证券 | 金晓溪、宋康泰 | 财通证券 | 柳婧舒 | | | 东北证券自营 | 赵远 | 南方基金 | 薛原 | | | 华泰保兴基金 | 池嘉莹 | 国寿安保基金 | 初梓健 | | | 宁银理财 | 徐云浩 | 兴证全球基金 | 黄煜杰 | | | 东方基金 | 綦家淳、龚洲加 | 民生加银基金 | 汤思懿 | | | 新华基金 | 朱旭 | 东方基金 | 綦家淳 | | | 浦银安盛基金 | 王巧喆 | 摩根基金 | 霍迪乔 | | | 国金资管 | 张雅楠 | 浦银安盛基金 | 钱之润 | | | 国泰基金 | 谢佳怡 | 泰信基金 | 曲奕丞 | | ...

证券代码：002452 证券简称：长高电新 公告编号：2026-11 长高电新科技股份公司 向不特定对象发行可转换公司债券发行结果公告 保荐人（主承销商）：华泰联合证券有限责任公司 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。 长高电新科技股份公司（以下简称"发行人"）向不特定对象发行可转换公司 债券（以下简称"可转债"）已获得中国证券监督管理委员会证监许可〔2026〕74 号文同意注册。华泰联合证券有限责任公司（以下简称"华泰联合证券"、"保荐 人（主承销商）"或"主承销商"）为本次发行的主承销商。本次发行的可转换公 司债券简称为"长高转债"，债券代码为"127113"。 本次发行原股东优先配售的缴款工作已于 2026 年 3 月 9 日（T 日）结束，本 次发行向原股东优先配售总计 573,242,000.00 元，即 5,732,420 张，占本次可转债 发行总量的 75.57%。 二、本次可转债网上认购结果 本次发行原股东优先配售后余额部分（含原股东放弃优先配售部分）的网上 认购缴款工作已于 2026 年 3 月 11 日（T+2 日）结束。本公告一 ...

Investment Rating - The investment rating for the company is not explicitly stated in the report, but it suggests a positive outlook for the convertible bond issuance and recommends active subscription [14][17]. Core Insights - The report highlights that Changgao Electric New's main business includes research, production, and sales of power transmission and transformation equipment, as well as power design and engineering services [18][30]. - The company has a stable revenue growth trajectory since 2020, with a compound annual growth rate (CAGR) of -7.74% from 2020 to 2024, and a projected revenue of 1.132 billion yuan in 2024, reflecting a year-on-year decrease of 24.22% [18][19]. - The net profit attributable to the parent company is expected to be 181 million yuan in 2024, showing a year-on-year increase of 4.60% [18]. - The report indicates that the company has a strong market position in the high-voltage switchgear sector, with significant technological advancements and a robust patent portfolio [30]. Summary by Sections 1. Convertible Bond Basic Information - The total issuance scale of Changgao Convertible Bond is 759 million yuan, with net proceeds allocated to various production projects [10][11]. - The bond has a maturity of 6 years, with a credit rating of AA-/AA- and a face value of 100 yuan [12][10]. - The bond's coupon rates range from 0.20% to 2.00% over its lifespan, with a redemption price of 110% of the face value at maturity [12][10]. 2. Investment Subscription Recommendations - The expected listing price for the convertible bond is projected to be between 121.24 and 135.07 yuan, with an estimated conversion premium of around 25% [14][15]. - The report suggests that the bond has good debt protection and moderate attractiveness in terms of rating and scale [15][14]. 3. Underlying Stock Fundamental Analysis 3.1 Financial Data Analysis - The company's revenue has shown a "W" shaped fluctuation pattern since 2020, with a notable decline in 2024 [18][19]. - The main business revenue ratio has remained high, indicating a strong focus on core operations [19]. - Sales net profit margins and gross profit margins have fluctuated, with sales net profit margins recorded at 16.00% in 2024 [22]. 3.2 Company Highlights - Changgao Electric New has over 20 years of experience in the power transmission and transformation equipment industry, with significant technological breakthroughs and a strong patent portfolio [30]. - The company has been involved in major national projects, showcasing its capability in high-voltage equipment production [30].

1. Report Industry Investment Rating - No information provided in the report regarding the industry investment rating 2. Core View of the Report - The report predicts that the listing price of Changgao Convertible Bond on the first day will be between 121.24 and 135.07 yuan, with an expected conversion premium rate of around 25% on the listing day. It is recommended to actively subscribe to the bond [3][14][15] 3. Summary According to the Directory 3.1 Convertible Bond Basic Information - Changgao Convertible Bond (127113.SZ) started online subscription on March 9, 2026, with a total issuance scale of 759 million yuan. After deducting issuance fees, the net raised funds will be used for the third - phase project of Changgao Electric New Jinzhou Production Base, the quality improvement and expansion project of Changgao Electric New Wangcheng Production Base, and the Changgao Green Smart Power Distribution Industrial Park Project [3] - The current bond floor valuation is 92.22 yuan, and the YTM is 2.19%. The bond has a 6 - year term, with a credit rating of AA -/AA - by China Chengxin International Credit Rating Co., Ltd. The coupon rates from the first to the sixth year are 0.2%, 0.4%, 0.6%, 1.0%, 1.5%, and 2.0% respectively. The company's redemption price at maturity is 110% of the par value (including the last - period interest) [3][12] - The current conversion parity is 102.45 yuan, and the parity premium rate is - 2.39%. The conversion period is from the first trading day after six months from the end of issuance to the maturity date of the convertible bond, i.e., from September 14, 2026, to March 8, 2032. The initial conversion price is 11.01 yuan per share [3][12] - The convertible bond terms are standard. The downward revision clause is "15/30, 85%", the conditional redemption clause is "15/30, 130%", and the conditional put - back clause is "30, 70%". The dilution rate of the total share capital is 10.00%, and the dilution rate of the tradable shares is 11.78%, with relatively small dilution pressure on the share capital [3][13] 3.2 Investment Subscription Suggestion - By referring to comparable targets and empirical results, considering the good bond floor protection of Changgao Convertible Bond, and the average attractiveness of its rating and scale, it is expected that the conversion premium rate on the listing day will be around 25%, corresponding to a listing price between 121.24 and 135.07 yuan [3][14][15] - The announced online winning rate is 0.0020676435%, and it is recommended to actively subscribe [3][17] 3.3 Positive Stock Fundamental Analysis 3.3.1 Financial Data Analysis - The company's main business includes the R & D, production, and sales of primary and secondary power transmission and transformation equipment, power design and engineering services, and new - energy power development. It has rich experience in product development and manufacturing, and its business covers provinces across the country and some overseas countries [18] - Since 2020, the company's revenue has fluctuated slightly, with a compound growth rate of - 7.74% from 2020 to 2024. In 2024, the company achieved an operating income of 1.132 billion yuan, a year - on - year decrease of 24.22%. Meanwhile, the net profit attributable to the parent has also fluctuated, with a compound growth rate of - 4.03% from 2020 to 2024. In 2024, the net profit attributable to the parent was 181 million yuan, a year - on - year increase of 4.60% [18] - The company's main business revenue mainly comes from power transmission and transformation equipment business and power survey, design, and engineering general contracting services. From 2022 to 2024, the proportion of main business revenue in operating income was 97.77%, 99.18%, and 98.69% respectively, with prominent main business [19] - The company's sales net profit margin and gross profit margin have fluctuated. The sales expense ratio has increased, while the financial expense ratio and management expense ratio have decreased. From 2020 to 2024, the sales net profit margins were 13.33%, 16.33%, 3.98%, 11.44%, and 16.00% respectively, and the sales gross profit margins were 34.93%, 33.47%, 31.29%, 34.44%, and 36.08% respectively [22] 3.3.2 Company Highlights - Changgao Electric has been deeply involved in the power transmission and transformation equipment industry for more than 20 years. Relying on the national - level enterprise technology center and three modern production bases, it has continuously achieved technological breakthroughs in cutting - edge fields such as UHV AC/DC disconnectors, ±1100kV DC GIS, and flexible DC switches. It has 108 invention patents and 345 utility model patents, participates in formulating multiple national and industry standards, and its disconnector products have won the "National Manufacturing Single - Champion" [30] - The company has the independent R & D and large - scale production capabilities for full - voltage - level and full - series high - voltage switch products. Its products have stable quality and are widely used in major national projects such as the "Zhangbei Flexible DC" and "Tibet - Central China Interconnection" [30]

证券代码：002452 证券简称：长高电新 公告编号：2026-10 长高电新科技股份公司 向不特定对象发行可转换公司债券中签号码公告 保荐人（主承销商）：华泰联合证券有限责任公司 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。 特别提示 长高电新科技股份公司（以下简称"长高电新"、"发行人"或"公司"） 和华泰联合证券有限责任公司（以下简称"华泰联合证券"或"保荐人（主承销 商）"或"主承销商"），根据《中华人民共和国证券法》《证券发行与承销管 理办法》（证监会令〔第 228 号〕）、《上市公司证券发行注册管理办法》（证 监会令〔第 227 号〕）、《深圳证券交易所上市公司证券发行与承销业务实施细 则（2025 年修订）》（深证上〔2025〕268 号）、《深圳证券交易所上市公司自 律监管指引第 15 号——可转换公司债券（2025 年修订）》（深证上〔2025〕223 号）和《深圳证券交易所上市公司自律监管指南第 1 号——业务办理（2026 年修 订）》（深证上〔2026〕134 号）等相关规定向不特定对象发行可转换公司债券 （以下简称"长高转债"或"可 ...

证券代码：002452 证券简称：长高电新 公告编号：2026-09 长高电新科技股份公司 向不特定对象发行可转换公司债券 网上发行中签率及优先配售结果公告 保荐人（主承销商）：华泰联合证券有限责任公司 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。 特别提示 长高电新科技股份公司（以下简称"长高电新"、"发行人"或"公司"） 和华泰联合证券有限责任公司（以下简称"华泰联合证券"、"保荐人（主承 销商）"或"主承销商"），根据《中华人民共和国证券法》《证券发行与承 销管理办法》（证监会令〔第 228 号〕）、《上市公司证券发行注册管理办法》 （证监会令〔第 227 号〕）、《深圳证券交易所上市公司证券发行与承销业务 实施细则（2025 年修订）》（深证上〔2025〕268 号）、《深圳证券交易所上 市公司自律监管指引第 15 号——可转换公司债券（2025年修订）》（深证上〔2025〕 223 号）和《深圳证券交易所上市公司自律监管指南第 1 号——业务办理（2026 年修订）》（深证上〔2026〕134 号）等相关规定向不特定对象发行可转换公司 债券（以下简 ...

特别提示 长高电新科技股份公司（以下简称"长高电新"、"发行人"或"公司"） 和华泰联合证券有限责任公司（以下简称"华泰联合证券"或"保荐人（主承 销商）"或"主承销商"），根据《中华人民共和国证券法》《证券发行与承 销管理办法》（证监会令〔第 228 号〕）、《上市公司证券发行注册管理办法》 （证监会令〔第 227 号〕）、《深圳证券交易所上市公司证券发行与承销业务 实施细则（2025 年修订）》（深证上〔2025〕268 号）、《深圳证券交易所上 市公司自律监管指引第 15 号——可转换公司债券（2025年修订）》（深证上〔2025〕 223 号）和《深圳证券交易所上市公司自律监管指南第 1 号——业务办理（2026 年修订）》（深证上〔2026〕134 号）等相关规定向不特定对象发行可转换公司 债券（以下简称"长高转债"或"可转债"）。 本次向不特定对象发行的可转债将向发行人在股权登记日（2026 年 3 月 6 日，T-1 日）收市后中国证券登记结算有限责任公司深圳分公司（以下简称"中 国结算深圳分公司"或"登记公司"）登记在册的原股东优先配售，原股东优 先配售后余额部分（含原股东放弃优先配售部分）通 ...