广东省建筑科学研究院集团股份有限公司 审计报告及财务报表 广东省建筑科学研究院集团股份有限公司 审计报告及财务报表 （2022 年 1 月 1 日 至 2024 年 12 月 31 日止） 一、 审计报告 1-6 二、 财务报表 合并资产负债表和母公司资产负债表 1-4 合并利润表和母公司利润表 5-6 合并现金流量表和母公司现金流量表 7-8 合并所有者权益变动表和母公司所有者权益变动 9-14 表 财务报表附注 1-187 审计报告 信会师报字2025第 ZM10079 号 广东省建筑科学研究院集团股份有限公司全体股东： 一、 审计意见 我们审计了广东省建筑科学研究院集团股份有限公司（以下简称 广东建科）财务报表，包括 2022 年 12 月 31 日、2023 年 12 月 31 日 及 2024 年 12 月 31 日的合并及母公司资产负债表，2022 年度、2023 年度及 2024 年度的合并及母公司利润表、合并及母公司现金流量表、 合并及母公司所有者权益变动表以及相关财务报表附注。 我们认为，后附的财务报表在所有重大方面按照企业会计准则的 规定编制，公允反映了广东建科 2022 年 12 月 3 ...

Audit Opinion - The audit report states that the financial statements of Yunnan Tin Indium Laboratory Co., Ltd. fairly reflect its financial position and operating results as of December 31, 2024, in accordance with accounting standards [1][2][3]. Management and Governance Responsibilities - The management is responsible for preparing the financial statements in accordance with accounting standards and maintaining internal controls to prevent material misstatements due to fraud or error [2][3]. - The governance body oversees the financial reporting process [2]. Auditor's Responsibilities - The auditor's goal is to obtain reasonable assurance that the financial statements are free from material misstatement, whether due to fraud or error [3][4]. - The auditor assesses risks of material misstatement and designs audit procedures to address these risks [3][4]. Company Overview - Yunnan Tin Indium Laboratory Co., Ltd. was established on August 24, 2016, and renamed on June 18, 2024, with a registered capital of 130 million RMB [5]. - The company operates in mineral resource research, technology development, and related services [5]. Financial Reporting Basis - The financial statements are prepared on a going concern basis, following the accounting standards issued by the Ministry of Finance [5]. - The company adheres to the accounting policies and estimates outlined in the financial statement notes [5]. Important Accounting Policies - The accounting period is based on the calendar year, from January 1 to December 31 [5]. - The company uses the historical cost principle for accounting, except for certain financial assets measured at fair value [5][6]. Consolidation Method - The consolidation scope is determined based on control, including the company and all subsidiaries [7][8]. - The financial results of subsidiaries are included in the consolidated financial statements from the date control is obtained [8][9]. Financial Instruments - Financial assets are classified based on the business model and cash flow characteristics, including those measured at amortized cost and fair value [13][14]. - The company recognizes expected credit losses based on credit risk assessments [17][23].

Audit Report - The audit opinion states that the financial statements of Yalong River Basin Hydropower Development Co., Ltd. fairly reflect its financial position as of December 31, 2024, and its operational results for the year 2024 in accordance with accounting standards [1][2][3] - The audit was conducted following the Chinese Certified Public Accountant auditing standards, ensuring independence and adherence to professional ethics [1][2] Financial Statements - The financial statements include consolidated and parent company balance sheets, income statements, cash flow statements, and changes in equity statements for both consolidated and parent company [1][2] - The company’s financial report was approved for release on March 31, 2025 [2] Company Overview - Yalong River Basin Hydropower Development Co., Ltd. was established in November 2012, with major shareholders including State Development & Investment Corporation and Sichuan Investment Group [2] - The company primarily operates in the hydropower sector, focusing on the development, construction, management, and sale of electricity from hydropower stations [2][3] Accounting Policies - The financial statements are prepared based on the accrual basis of accounting, with historical cost as the primary measurement basis [3] - The company follows the accounting standards issued by the Ministry of Finance, ensuring compliance and accurate reflection of its financial status [3] Capital Structure - The company has undergone several capital increases, with the registered capital reaching RMB 473 million as of the latest report [2][3] - The ownership structure includes significant stakes held by State Development & Investment Corporation and Sichuan Investment Group, reflecting a stable capital base [2] Financial Reporting - The financial report adheres to the principles of continuous operation, indicating that the company is expected to continue its operations for the foreseeable future [2][3] - The report includes detailed notes on significant accounting policies, estimates, and the basis for preparing the financial statements [3][4]