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CHANGZHOU LANGBO SEALING TECHNOLOGIES CO.,LTD. logo

CHANGZHOU LANGBO SEALING TECHNOLOGIES CO.,LTD. — Investor Relations & Filings

Ticker · 603655 ISIN · CNE100002T48 Shanghai Stock Exchange Manufacturing
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Filings indexed 661 across all filing types
Latest filing 2026-05-07 Regulatory Filings
Country CN China
Listing Shanghai Stock Exchange 603655

About CHANGZHOU LANGBO SEALING TECHNOLOGIES CO.,LTD.

https://www.jmp-seal.com/

Changzhou Langbo Sealing Technologies Co., Ltd. specializes in the research, development, and manufacturing of high-performance rubber sealing products. The company's portfolio includes precision O-rings, gaskets, and specialized seals designed for automotive air conditioning compressors, braking systems, and engine components. Utilizing advanced materials such as EPDM, NBR, and fluororubber, the firm provides sealing solutions that meet rigorous technical standards for durability and pressure resistance. Its production processes incorporate automated molding and testing technologies to ensure high precision and consistency. Serving primarily as a supplier to the automotive industry and household appliance manufacturers, the company focuses on technical innovation and quality management systems to support global supply chains and specialized industrial applications.

Recent filings

Filing Released Lang Actions
关于召开2025年年度暨2026年第一季度业绩说明会的公告
Regulatory Filings
2026-05-07 Chinese
2025年年度股东会会议资料
Regulatory Filings
2026-05-07 Chinese
董事会关于2025年度独立董事独立性情况的专项意见
Governance Information Classification · 85% confidence The document is a formal Board of Directors’ special opinion on the independence of the company’s independent directors, issued in compliance with listing rules and governance guidelines. It does not announce changes in personnel (so not MANG) nor is it an earnings or regulatory financial report. Instead, it relates to corporate governance practices and internal oversight of director independence, fitting the Governance Information (CGR) category.
2026-04-27 Chinese
2025年度独立董事述职报告（吉庆敏）
Board/Management Information Classification · 95% confidence The document is titled as the "2025年度独立董事述职报告" which translates to "2025 Annual Independent Director's Work Report." It is a detailed report by an independent director about their duties, attendance, opinions, and activities during the year 2025. The content includes the director's background, meeting attendance, communication with auditors, supervision of company governance, and other oversight activities. This type of document is a formal report by a board member on their management and supervisory role, which fits the category of Board/Management Information (MANG). It is not an annual report (10-K), audit report (AR), or any other financial or regulatory filing. The length and detail confirm it is a substantive report, not a brief announcement or certification. Therefore, the correct classification is MANG with high confidence.
2026-04-27 Chinese
关于变更持续督导保荐代表人的公告
Regulatory Filings Classification · 82% confidence The document is an official corporate announcement regarding the change of continuous supervision sponsor representatives (保荐代表人) for an IPO project. It is a compliance/ regulatory disclosure notice required by the exchange rather than a full financial report, management discussion, dividend notice, or share issuance. It does not concern changes in the company’s board or senior management directly but is a sponsor compliance update. Thus this falls under the general "Regulatory Filings (RNS)" category as a compliance/regulatory announcement.
2026-04-22 Chinese
关于变更持续督导保荐代表人的公告
Regulatory Filings Classification · 95% confidence The document is an announcement regarding the change of the continuous supervision sponsor representative for a company's IPO project. It details the replacement of a sponsor representative and provides a brief biography of the new representative. There is no financial data, report, or detailed analysis included. The document is a regulatory announcement about management of the IPO supervision process, not a financial report or earnings release. It fits best under Regulatory Filings (RNS) as it is a compliance-related announcement that does not fit other specific categories.
2026-04-08 Chinese

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