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DIOO MICROCIRCUITS CO., LTD. JIANGSU — Investor Relations & Filings

Ticker · 688381 ISIN · CNE100005PM7 Shanghai Stock Exchange Manufacturing
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Filings indexed 536 across all filing types
Latest filing 2026-05-20 Regulatory Filings
Country CN China
Listing Shanghai Stock Exchange 688381

About DIOO MICROCIRCUITS CO., LTD. JIANGSU

https://www.dioo.com/

DIOO Microcircuits Co., Ltd. Jiangsu specializes in the design and development of high-performance analog and mixed-signal integrated circuits. The company’s product portfolio includes operational amplifiers, audio power amplifiers, analog switches, and power management solutions such as DC/DC converters, LDOs, and LED drivers. Additionally, it provides specialized interface ICs and signal chain components. These products are engineered for low power consumption, high precision, and reliability, catering to applications in consumer electronics, mobile communications, medical equipment, and automotive electronics. The company focuses on technical innovation to support the requirements of device miniaturization and enhanced signal integrity across various electronic platforms.

Recent filings

Filing Released Lang Actions
关于出售参股公司部分股份的公告
Regulatory Filings Classification · 75% confidence The document is a formal Shanghai Stock Exchange disclosure by Jiangsu Dio Microelectronics (stock code 688381) announcing the sale of a 0.21% stake in an investee company. It provides transaction details, board resolutions, purchaser information, pricing and payment terms, procedural approvals, and risk disclosures – but contains no financial statements, no fundraising or capital issuance, no merger or takeover proposal, and no officer certification. It is a miscellaneous regulatory announcement regarding an asset disposal that does not fit any more specific category. Under our taxonomy, it falls into the fallback “Regulatory Filings (RNS)” category.
2026-05-20 Chinese
北京市中伦（上海）律师事务所关于江苏帝奥微电子股份有限公司2025年年度股东会的法律意见书
Regulatory Filings Classification · 62% confidence The document is a legal opinion letter (“法律意见书”) issued by Zhong Lun law firm on the legality of procedures, qualifications, and voting results at the company’s 2025 annual shareholders’ meeting. It is not an AGM presentation, proxy solicitation, nor a financial report. It primarily serves as a legal/regulatory filing rather than substantive financial or management content. No specific category for legal opinion letters exists, so this falls under the fallback category of general regulatory filings.
2026-05-13 Chinese
中信建投证券股份有限公司关于江苏帝奥微电子股份有限公司首次公开发行股票并在科创板上市之保荐总结报告书
Regulatory Filings Classification · 65% confidence The document is a “保荐总结报告书” (Sponsor Summary Report) issued by the underwriter (CITIC Securities) summarizing its IPO sponsorship and continuous supervision work for Jiangsu Diowei Electronics’ STAR Market listing. It is a compliance/regulatory filing under Chinese securities rules and does not match categories like Annual Report (10-K), Earnings Release (ER), Investor Presentation (IP), or any specific transaction notice. It is not merely announcing a report but is itself the report. As there is no more specific category for sponsor summary reports, it falls under the fallback category: Regulatory Filings (RNS).
2026-05-11 Chinese
2025年年度股东会会议资料
AGM Information Classification · 100% confidence The document is titled as "2025年年度股东会会议资料" which translates to "2025 Annual General Meeting (AGM) Meeting Materials". It contains detailed agenda items for the 2025 AGM, including proposals on profit distribution, board work report, director and senior management remuneration plans, auditor reappointment, annual report approval, asset impairment provisions, insurance for directors and senior management, use of raised funds, and amendments to remuneration management system. It also includes independent directors' annual reports and detailed attendance and duties, which are typical materials shared at an AGM. The document is comprehensive and clearly intended as meeting materials for the annual shareholders meeting, not the annual report itself or any other filing type. Therefore, the correct classification is AGM Information (AGM-R). The document length is 15,000 characters, indicating it is the full meeting materials, not just an announcement or a brief notice.
2026-04-30 Chinese
审计报告及财务报表
Audit Report / Information Classification · 100% confidence The document is titled '审计报告' (Audit Report) for 江苏帝奥微电子股份有限公司, covering the fiscal year from January 1, 2025 to December 31, 2025. It includes detailed audit opinions, key audit matters, responsibilities of management and auditors, and extensive financial statements such as consolidated balance sheets, income statements, cash flow statements, and notes. The presence of an independent auditor's opinion, detailed financial data, and audit procedures confirms this is a standalone audit report rather than a full annual report or an announcement. The document length is substantial (15,000 characters), and it contains actual financial statements and audit details, not just a certification or announcement. Therefore, the appropriate classification is Audit Report / Information (AR). FY 2025
2026-04-22 Chinese
2025年年度报告摘要
Annual Report Classification · 100% confidence The document is titled "江苏帝奥微电子股份有限公司2025年年度报告摘要" which translates to "Jiangsu Dioo Microelectronics Co., Ltd. 2025 Annual Report Summary." It contains detailed company information, business overview, product descriptions, industry analysis, and financial data such as profit distribution plans and audit opinions. The document is lengthy (15,000 characters) and includes comprehensive management discussion and analysis, risk factors, and operational details typical of an annual report. It explicitly states it is a summary of the annual report and references the full annual report for complete details. The presence of an audit report mention and detailed financial and operational data confirms this is a substantive annual report document, not merely an announcement or summary notice. Therefore, the document fits the definition of an Annual Report (10-K). FY 2025
2026-04-22 Chinese

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