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JIANGSU HHCK ADVANCED MATERIALS CO., LTD. — Investor Relations & Filings

Ticker · 688535 ISIN · CNE100006046 Shanghai Stock Exchange Manufacturing
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Filings indexed 486 across all filing types
Latest filing 2026-05-24 Regulatory Filings
Country CN China
Listing Shanghai Stock Exchange 688535

About JIANGSU HHCK ADVANCED MATERIALS CO., LTD.

http://www.hhck-em.com/

Jiangsu HHCK Advanced Materials Co., Ltd. specializes in the research, development, and manufacturing of high-performance epoxy molding compounds (EMC) used in semiconductor packaging. The company provides a comprehensive range of electronic packaging materials designed for integrated circuits, discrete semiconductor devices, and power modules. Its product portfolio includes specialized solutions for various packaging formats such as SOP, QFP, BGA, and SiP, catering to the demands of consumer electronics, automotive electronics, and industrial applications. HHCK focuses on advanced material science to enhance the reliability and thermal performance of electronic components. By leveraging sophisticated production processes and rigorous quality control, the company supports the global semiconductor supply chain with materials that meet stringent technical requirements for miniaturization and high-power density.

Recent filings

Filing Released Lang Actions
江苏华海诚科新材料股份有限公司股东减持股份计划公告
Regulatory Filings Classification · 80% confidence The document is a shareholder’s announcement of a planned reduction (“减持计划公告”) of their existing shareholding, not an annual or interim report, earnings release, board change, dividend notice, or M&A filing. It is neither a company share issue nor a buyback by the company itself, nor a proxy solicitation or director’s insider transaction. It serves as a regulatory disclosure under Chinese securities rules about a shareholder’s planned share disposal. No specific category for “shareholder reduction plans” exists among the list, so it falls under the general fallback category for regulatory announcements (RNS).
2026-05-24 Chinese
江苏华海诚科新材料股份有限公司股东询价转让结果报告书暨持股5%以上股东持有权益变动触及1%整数倍的提示性公告
Major Shareholding Notification Classification · 91% confidence The document is a regulatory announcement by Jiangsu Huahaichengke New Materials Co., Ltd. detailing the results of an inquiry-based transfer of shares by a >5% shareholder (Lianyungang Deyufeng Investment Partnership) and the consequent change in shareholding percentage (from 29.48% to 26.62%). The content focuses on the disposal by a major shareholder, the specific share quantities, transfer price, and the threshold-crossing change in ownership. This matches the definition of a Major Shareholding Notification (changes in significant share ownership levels exceeding threshold percentages).
2026-05-14 Chinese
中信建投证券股份有限公司关于江苏华海诚科新材料股份有限公司股东向特定机构投资者询价转让股份的核查报告
Regulatory Filings Classification · 85% confidence The document is a due‐diligence “核查报告” (verification report) prepared by the sponsoring broker (中信建投证券) for the Shanghai Stock Exchange regarding a shareholder’s inquiry‐based transfer of pre‐IPO shares. It does not present financial statements, earnings data, or constitute an annual/interim report, nor is it a vote result, capital raise announcement, or M&A filing. Instead, it is a compliance and regulatory submission confirming that the share transfer process meets applicable stock‐exchange guidelines and laws. This falls under general regulatory announcements and compliance documents. Therefore, it is classified as a Regulatory Filing (RNS).
2026-05-14 Chinese
光大证券股份有限公司关于江苏华海诚科新材料股份有限公司2025年度持续督导工作现场检查报告
Regulatory Filings Classification · 75% confidence The document is a sponsor’s on‐site continuous supervision inspection report (保荐机构现场检查报告) under listing rule requirements, not an annual or interim financial statement, audit report, or dividend/capital notice. It is a compliance report filed with regulators/exchange, fitting the catch‐all “Regulatory Filings (RNS)” category.
2026-05-11 Chinese
江苏华海诚科新材料股份有限公司股东询价转让定价情况提示性公告
Regulatory Filings Classification · 75% confidence The document is a formal company announcement (“提示性公告”) disclosing the preliminary pricing and subscription details for a shareholder’s inquiry-based transfer of existing shares. It is not a financial report (no statements or analysis), not an earnings release, not a management presentation, not a new share issue (no dilution), nor an insider trade by directors. It merely informs investors of the share transfer pricing process. It therefore does not fit any specific report category and defaults to a general regulatory announcement.
2026-05-11 Chinese
江苏华海诚科新材料股份有限公司股东减持计划结果公告
Major Shareholding Notification Classification · 85% confidence The document is a formal announcement by Jiangsu Huahai Chengke New Materials Co. detailing the implementation results of a share reduction plan (股东减持股份结果公告) by a significant shareholder (Yang Senmao). It provides specific dates, quantities, percentages of total share capital before and after the sale, and confirms compliance with disclosure rules. This is not a company buyback (POS), nor a director’s insider trade (DIRS), but rather a change in major shareholding levels. Therefore, it falls under Major Shareholding Notification (MRQ).
2026-05-11 Chinese

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