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Shijiazhuang Tonhe Electronics Technologies Co., Ltd. — Investor Relations & Filings

Ticker · 300491 ISIN · CNE1000024V6 Shenzhen Stock Exchange Manufacturing
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Filings indexed 1,802 across all filing types
Latest filing 2026-05-12 Regulatory Filings
Country CN China
Listing Shenzhen Stock Exchange 300491

About Shijiazhuang Tonhe Electronics Technologies Co., Ltd.

https://www.sjzthdz.com

Shijiazhuang Tonhe Electronics Technologies Co., Ltd. specializes in the design, manufacture, and distribution of high-frequency switching power supply systems and components. The company’s core product range includes electric vehicle (EV) charging modules, DC fast-charging stations, and power grid DC power supply systems. Additionally, it develops on-board power electronics, such as DC/DC converters and vehicle-mounted chargers, alongside specialized power solutions for industrial and defense applications. Tonhe focuses on advancing power conversion technology, emphasizing high efficiency, modularity, and high power density. Its solutions support the development of EV infrastructure and the modernization of power utility networks through reliable, high-performance energy management hardware.

Recent filings

Filing Released Lang Actions
关于变更向不特定对象发行可转换公司债券保荐代表人的公告
Regulatory Filings Classification · 80% confidence The document is a formal announcement by a Chinese listed company regarding the change of the sponsor representatives (“保荐代表人”) for its planned convertible bond issuance to unspecified investors. It contains no financial statements or fundraising details, nor is it the issuance notice itself—rather, it is a regulatory disclosure required by the exchange. It does not fit capital/financing update criteria (CAP) because it does not discuss financing terms, nor management change (MANG) since the individuals are third‐party sponsor reps, not company officers. This is best classified as a general regulatory filing (RNS).
2026-05-12 Chinese
简式权益变动报告书
Major Shareholding Notification Classification · 95% confidence The document is a “简式权益变动报告书” (Simple Report on Equity Change) filed by a shareholder whose stake crosses the 5% threshold. It details the changes in shareholding of the information disclosure obligor, reasons, dates and amounts. This matches the “Major Shareholding Notification” category.
2026-05-11 Chinese
关于控股股东、实际控制人之一持股比例变动触及1%及5%整数倍暨披露简式权益变动报告书的提示性公告
Major Shareholding Notification Classification · 93% confidence The document is a mandatory disclosure by the company regarding the controlling shareholder’s equity changes touching 1% and 5% thresholds, detailing shareholding before and after the change. This corresponds to a Major Shareholding Notification, as it reports changes in significant share ownership levels crossing specified percentage thresholds.
2026-05-11 Chinese
2025年度可持续发展报告
Environmental & Social Information Classification · 100% confidence The document is titled '2025年度可持续发展报告' which translates to '2025 Sustainability Report'. It is issued by 石家庄通合电子科技股份有限公司 and covers the company's environmental, social, and governance (ESG) practices and performance for the year 2025. The content includes sections on company governance, environmental management, social performance, and sustainability highlights. It references standards such as GRI, SASB, and ISSB sustainability disclosure standards, which are typical for ESG or sustainability reports. The document is comprehensive and contains detailed data and narrative on sustainability topics rather than financial statements or earnings data. It is not an annual report (10-K), earnings release, or any other financial filing. It fits the definition of Environmental & Social Information (SR) as it details the company's ESG performance and practices.
2026-03-25 Chinese
第五届董事会第十五次会议决议公告
Board/Management Information Classification · 95% confidence The document is a detailed announcement of the resolutions passed at the 15th meeting of the 5th Board of Directors of Shijiazhuang Tonghe Electronic Technology Co., Ltd. It includes approvals of various reports such as the 2025 General Manager Work Report, 2025 Board Work Report, 2025 Annual Report and its summary, 2025 Sustainable Development Report, Internal Control Evaluation Report, Profit Distribution Plan, and other governance-related proposals. The document repeatedly states that the detailed contents of these reports are published on the official disclosure website (cninfo.com.cn), indicating that this document itself is not the full annual report or the reports mentioned but rather a formal announcement of board meeting resolutions. It also includes voting results and mentions that some proposals will be submitted to the shareholders' meeting for approval. The document is about board meeting resolutions and governance decisions, not the full financial or management reports themselves. Therefore, it fits best under the category of Board/Management Information (MANG). The document length (5947 characters) is sufficient for a detailed announcement but does not contain the full reports, consistent with a board meeting resolution announcement.
2026-03-25 Chinese
董事会对独立董事独立性评估的专项意见
Board/Management Information Classification · 95% confidence The document is a special opinion from the company's board regarding the independence evaluation of independent directors. It references regulatory guidelines related to independent directors and their qualifications but does not contain financial data, audit results, or any report publication. It is a board/management related announcement about director independence assessment, which fits best under Board/Management Information (MANG). The document length is short and focused on management/board evaluation rather than financial or regulatory filings.
2026-03-25 Chinese

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