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SUNSTONE DEVELOPMENT CO., LTD — Investor Relations & Filings

Ticker · 603612 LEI · 655600VQT5E9S4FK9A09 Shanghai Stock Exchange Manufacturing
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Filings indexed 1,408 across all filing types
Latest filing 2026-04-22 Annual Report
Country CN China
Listing Shanghai Stock Exchange 603612

About SUNSTONE DEVELOPMENT CO., LTD

Sunstone Development Co., Ltd. specializes in the research, development, and manufacturing of carbon materials, primarily serving the global primary aluminum industry. The company is a leading producer of pre-baked carbon anodes, which are essential components in the electrolytic reduction process of aluminum smelting. Its product portfolio includes high-quality pre-baked anodes, cathode blocks, and specialized carbon materials designed to enhance energy efficiency and reduce environmental impact. Sunstone operates large-scale production facilities and emphasizes technological innovation to meet international quality standards. The company provides integrated solutions for aluminum smelters, focusing on optimizing the performance and longevity of carbon products in high-temperature industrial environments.

Recent filings

Filing Released Lang Actions
索通发展股份有限公司2025年年度报告
Annual Report Classification · 1% confidence The document is the '2025 Annual Report' (2025年年度报告) for Sunstone Development Co., Ltd. (索通发展股份有限公司). It contains comprehensive financial statements, management discussion and analysis (MDA), auditor information, and corporate governance details, spanning 250 pages. It is clearly a full annual report, not an announcement or summary. FY 2025
2026-04-22 Chinese
索通发展股份有限公司2025年度内部控制评价报告
Audit Report / Information Classification · 1% confidence The document is the full ‘2025年度内部控制评价报告’ (Internal Control Evaluation Report) prepared under the PRC ‘Enterprise Internal Control Basic Norms’ and related guidance. It is not a brief announcement of a report (so not RPA), nor an Annual Report (10-K) or quarterly/interim report (IR), nor is it a management discussion (MDA) or governance charter (CGR). It is a standalone internal control evaluation, which best fits the Audit Report / Information category (AR).
2026-04-22 Chinese
索通发展股份有限公司2025年度独立董事述职报告（张金昌）
Governance Information Classification · 1% confidence The document is titled “2025年度独立董事述职报告” (2025 Annual Independent Director Performance Report) and contains the independent director’s background, attendance records, exercise of duties, key governance activities, and overall evaluation. It is not a financial results announcement, earnings release, or full annual report, nor is it merely a notice of a board change. Rather, it is a corporate governance disclosure detailing board structure, independent director duties, and governance practices. This fits the definition of Governance Information (CGR).
2026-04-22 Chinese
索通发展股份有限公司关于会计师事务所2025年度履职情况评估报告
Audit Report / Information Classification · 1% confidence The document is titled “关于会计师事务所2025年度履职情况评估报告” (Report on the 2025 Performance Evaluation of the Accounting Firm) and is a detailed standalone evaluation by the board of the auditor’s qualifications, independence, quality controls, and execution of its audit duties. It is audit-related information outside of a full annual or quarterly financial report. This aligns with the “Audit Report / Information” category (AR).
2026-04-22 Chinese
索通发展股份有限公司2025年度“提质增效重回报”行动方案评估报告暨2026年度“提质增效重回报”行动方案
Management Reports Classification · 1% confidence The document is a standalone corporate plan and assessment report (“action plan” evaluation for 2025 and planning for 2026) containing detailed management commentary on past performance metrics, business trends, strategic initiatives (innovation, capacity expansion, ESG, governance) and future targets. It is not an earnings release, regulatory notice or short announcement, nor a full annual or interim financial report; rather, it is a management discussion and outlook on corporate operations and strategy. Therefore, it best fits the “Management Reports” category (MDA).
2026-04-22 Chinese
索通发展股份有限公司关于2026年度新增担保额度预计及相关授权的公告
Capital/Financing Update Classification · 1% confidence The document is a formal listed-company announcement detailing the proposed 2026 new guarantee quotas for its subsidiaries and related authorizations, including amounts, terms, risk warnings, and the internal and shareholder‐meeting approvals required to guarantee subsidiary borrowings. This relates to the company’s financing arrangements (credit guarantee commitments) rather than an annual or interim financial report, management appointments, dividends, or share issues. Therefore it best fits the “Capital/Financing Update” category (CAP).
2026-04-22 Chinese

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