Core Points - The document outlines the external guarantee management system of Tianma Microelectronics Co., Ltd, aiming to regulate external guarantees and control debt risks to protect the company and its stakeholders [1][2] - The management system is based on relevant laws and regulations, including the Securities Law, Company Law, Civil Code, and listing rules [1][2] Group 1: General Principles - The external guarantees refer to the guarantees provided by the listed company for its controlling and affiliated companies, including forms such as guarantees, mortgages, and pledges [1] - The primary goal of the external guarantee management is to strictly control the debt risks associated with external guarantees [2] Group 2: Guarantee Categories - Guarantees are categorized into three types: prohibited guarantees, strictly controlled guarantees, and general guarantees [3] - Prohibited guarantees include those for companies with negative cash flow or lack of sustainable operating capability [3] - The total amount of external guarantees by the company and its subsidiaries should not exceed 50% of the latest net assets [5] Group 3: Approval Process - External guarantees must be approved by the board of directors or shareholders, requiring a two-thirds majority for board decisions [5][6] - The company must require counter-guarantees from the parties involved, ensuring they have the capacity to fulfill the obligations [10] Group 4: Risk Control and Management - The finance management center is responsible for the initial review and daily management of guarantee applications, ensuring compliance with the established procedures [2][6] - The company must conduct thorough assessments of the creditworthiness of the parties involved before providing guarantees [10][11] Group 5: Documentation and Record Keeping - All documents related to external guarantees must be properly maintained, including guarantee applications and approval records [9] - The company is required to disclose information regarding external guarantees in accordance with relevant regulations [6][9]

天马微电子股份有限公司 董事和高级管理人员离职管理制度 （2025 年 8 月） 第一章 总则 第一条 为规范天马微电子股份有限公司（以下简称"公司"）董事和高级管理 人员的离职管理，保障公司治理结构的稳定性，维护公司及全体股东的合法权益， 根据《中华人民共和国公司法》《中华人民共和国证券法》《深圳证券交易所股票 《深圳证券交易所上市公司自律监管指引第 1 号——主板上市公司规范 上市规则》 运作》《天马微电子股份有限公司章程》（以下简称"《公司章程》"）等有关规定， 制定本制度。 第二条 本制度适用于公司全体董事、高级管理人员的离职管理。 第二章 离任程序 第三条 董事可以在任期届满以前辞任。董事辞任应当向公司提交书面报告， 辞任报告中应说明辞任原因等情况，公司收到辞任报告之日辞任生效。 第四条 股东会可以决议解任董事，决议作出之日解任生效。 无正当理由，在任期届满前解任董事的，董事可以要求公司予以赔偿。 第五条 除法律法规、规范性文件等规定不得被提名担任上市公司董事情形外， 出现下列规定情形的，在改选出的董事就任前，原董事仍应当按照有关法律法规、 深圳证券交易所相关规定和《公司章程》的规定继续履行职责： ...

Group 1 - The candidate Liang Xinqing has been nominated as an independent director for the 11th Board of Directors of Tianma Microelectronics Co., Ltd. and has confirmed understanding and agreement with the nomination [1] - The candidate declares that there are no relationships that could affect independence and meets the qualifications required by relevant laws and regulations [1][2] - The candidate has passed the qualification review by the Nomination and Compensation Committee of the 10th Board of Directors and has no interests that could influence independent performance [1][2] Group 2 - The candidate affirms compliance with the requirements of the China Securities Regulatory Commission and Shenzhen Stock Exchange regarding independent director qualifications [2][3] - The candidate has participated in training and obtained relevant certification recognized by the stock exchange [2] - The candidate confirms that serving as an independent director will not violate any relevant laws or regulations [2][3] Group 3 - The candidate has no direct or indirect shareholding of more than 1% in the company and is not among the top ten shareholders [4][5] - The candidate and immediate family members do not hold positions in the company or its subsidiaries [4][5] - The candidate has not been subject to any disqualifications or penalties by regulatory authorities in the past three years [5][6]

一、被提名人已经通过天马微电子股份有限公司第十届董事会 提名和薪酬委员会资格审查，提名人与被提名人不存在利害关系或 者其他可能影响独立履职情形的密切关系。 ?是 □否 如否，请详细说明： 二、被提名人不存在《中华人民共和国公司法》第一百七十八 条等规定不得担任公司董事的情形。 ?是 □否 证券代码：000050 证券简称：深天马A 公告编号：2025-060 天马微电子股份有限公司 独立董事提名人声明与承诺 提名人天马微电子股份有限公司董事会现就提名 童一杏 为天 马微电子股份有限公司第十一届董事会独立董事候选人发表公开声 明。被提名人已书面同意作为天马微电子股份有限公司第十一届董 事会独立董事候选人（参见该独立董事候选人声明）。本次提名是 在充分了解被提名人职业、学历、职称、详细的工作经历、全部兼 职、有无重大失信等不良记录等情况后作出的，本提名人认为被提 名人符合相关法律、行政法规、部门规章、规范性文件和深圳证券 交易所业务规则对独立董事候选人任职资格及独立性的要求，具体 声明并承诺如下事项： 如否，请详细说明： 三、被提名人符合中国证监会《上市公司独立董事管理办法》 和深圳证券交易所业务规则规定的独立董 ...

天马微电子股份有限公司 内部审计管理制度 （2025 年 8 月修订） 第一章 总 则 第一条 为了规范和指导天马微电子股份有限公司（以下简称"公司"）内部审 计工作和审计人员执行审计业务的行为，保证审计质量，防范审计风险，加强内部的 管理和监督，提高企业管理水平，根据《中华人民共和国审计法》、《中华人民共和 国审计法实施条例》、《中华人民共和国国家审计准则》，结合天马公司实际，制定 本制度。 第二条 本制度是公司内部审计机构和审计人员履行审计职责的行为规范，是执 行审计业务的职业标准，是评价审计质量的基本尺度。 第三条 内部审计是指根据国家的方针政策、法律法规、公司章程以及有关文件 规定，对公司及全资和控股的子公司与直接或间接实际管理的公司（以下统称"各企 业"或"被审计单位"）的财务收支、经济活动、内部控制、风险管理实施独立、客 观的监督、评价和建议，以促进各企业完善治理、实现目标的活动。 第四条 各企业在接受审计时，应当履行主动配合审计、提供真实完整审计资料 的主体责任，不得设置障碍阻挠审计，不得弄虚作假隐瞒情况，为审计工作开展提供 必要的条件保障。 第五条 内部审计机构在其职权范围内，应按规定程序出具 ...

General Principles - The company establishes a system for the temporary suspension and exemption of information disclosure to ensure compliance with legal obligations and protect investors' rights [1] - The company and related parties must disclose information truthfully, accurately, completely, timely, and fairly, without abusing the suspension or exemption to evade disclosure obligations or mislead investors [1][2] Scope of Suspension and Exemption - Information can be exempted from disclosure if it involves state secrets or other matters that may violate confidentiality regulations [2] - Business secrets can be temporarily suspended or exempted from disclosure if they meet specific criteria, such as core technology information that could lead to unfair competition or information that could severely harm the interests of the company or others [2][3] Approval Procedures - The company must carefully determine matters related to the suspension and exemption of information disclosure and take effective measures to prevent leaks [4] - The board of directors leads and manages the suspension and exemption matters, with the board secretary responsible for organizing and coordinating the process [4] Registration and Reporting - The company must register details of the suspension or exemption, including the type of documents involved and the internal review process [5] - Relevant registration materials must be submitted to the Shenzhen Securities Regulatory Bureau and the Shenzhen Stock Exchange within ten days after the announcement of periodic reports [5] Accountability - The company establishes a responsibility accountability mechanism for improper handling of suspension or exemption of disclosure, holding responsible personnel accountable for any adverse effects caused [5]

General Principles - The purpose of the external investment management system is to standardize the investment activities of Tianma Microelectronics Co., Ltd. and its subsidiaries, enhance investment management, mitigate investment risks, and improve investment efficiency and effectiveness [1][2] - External investment refers to the investment activities conducted by the company and its subsidiaries to acquire fixed assets, equity, and other related rights through asset input, equity, or financing and guarantees [1][2] Decision-Making and Approval Authority - The company implements a professional management and hierarchical approval system for external investments [2][3] - The investment decision-making bodies include the shareholders' meeting, board of directors, and the general manager's office, which follow the established procedures for investment project decisions [2][3] Investment Decision-Making - Investment activities must be included in the annual investment plan, and units are required to submit their investment plans for the next year to the strategic management department [3][4] - A thorough feasibility study covering market, technology, finance, and legal aspects must be conducted for investment projects, including financing, investment, management, and exit strategies [3][4] Management During Investment - The company conducts comprehensive supervision and inspection of major investment projects, focusing on project execution and outcomes [5] - Investment units are required to regularly analyze key investment projects and take timely measures in response to significant changes in external environments or project conditions [5] Post-Investment Management - The company conducts annual evaluations of completed investment projects to summarize investment experiences and improve decision-making mechanisms [6] - A special report is generated from the post-evaluation to enhance project success rates and investment returns [6] Information Disclosure - The company adheres to relevant laws, regulations, and normative documents regarding information disclosure, ensuring timely compliance with disclosure obligations [6]

天马微电子股份有限公司 外汇衍生品交易业务管理制度 第三条 公司开展外汇衍生品交易业务只允许与经国家外汇管理总局和中 国人民银行批准、具有外汇衍生品交易业务经营资格的金融机构进行交易，不得 与前述金融机构之外的其他组织或个人进行交易。 第四条 公司进行外汇衍生品交易必须基于公司的外币收（付）款的谨慎预 测，外汇衍生品交易合约的外币金额不得超过外币收（付）款的谨慎预测量。外 汇衍生品交易的交割期间需与公司预测的外币回款时间相匹配，持仓时间一般不 得超过 12 个月或实货合同规定时间。 （2025 年 8 月修订） 第一章 总 则 为规范天马微电子股份有限公司（以下简称"公司"）外汇衍生品交易业务及 相关信息披露工作，加强对外汇衍生品交易业务的管理，防范投资风险，健全和 完善公司外汇衍生品交易业务管理机制，确保公司资产安全，根据《中华人民共 和国公司法》《中华人民共和国证券法》《深圳证券交易所股票上市规则》《上 市公司信息披露管理办法》及《公司章程》等有关规定，结合公司实际情况，特 制定本制度。 第一条 本制度所指外汇衍生品业务主要是以汇率为标的资产的远期合约、 掉期业务为套期工具，旨在为降低主业范围内风险敞口而 ...

Core Points - The document outlines the management and usage regulations for funds raised by Tianma Microelectronics Co., Ltd, ensuring investor interests are protected and compliance with relevant laws and regulations is maintained [1][21]. Group 1: General Principles - The management system is established to regulate the management and use of raised funds, ensuring alignment with the commitments made in the issuance application documents [1]. - The term "raised funds" refers to funds obtained through the issuance of stocks or other equity-like securities, excluding funds raised for equity incentive plans [1]. - The company must use raised funds prudently and ensure that their usage aligns with the commitments made during the issuance process [1][2]. Group 2: Fund Storage - The company is required to open a special account for raised funds, which must be approved by the board of directors, and these funds should not be mixed with other funds [3]. - Upon the arrival of raised funds, the company must promptly complete verification procedures and obtain a verification report from a qualified accounting firm [9]. - A tripartite supervision agreement must be signed with the sponsor or independent financial advisor and the commercial bank within one month of the funds being in place [10]. Group 3: Fund Usage - Raised funds should primarily be used for the company's main business and must not be used for high-risk investments or to provide financial assistance to others [6][7]. - The company must ensure the authenticity and fairness of the use of raised funds, preventing misuse by controlling shareholders or related parties [12]. - If any investment project funded by raised funds encounters significant changes in market conditions or fails to meet investment timelines, the company must reassess the project's feasibility [13][14]. Group 4: Management and Supervision - The finance management center of the company must maintain detailed records of the usage of raised funds, and internal audits should be conducted quarterly [30]. - The board of directors is responsible for continuously monitoring the actual management and usage of raised funds and must report any discrepancies in investment progress [31][32]. - Any irregularities in the management of raised funds must be reported to the Shenzhen Stock Exchange by the sponsor or independent financial advisor [20].

Core Points - The document outlines the selection system for accounting firms at Tianma Microelectronics Co., Ltd, emphasizing compliance with relevant laws and regulations [1][2][3] - The responsibilities of the Audit and Risk Management Committee include overseeing the selection process and evaluating the performance of the appointed accounting firms [5][6] - The document specifies the procedures for selecting accounting firms, including requirements for public bidding and the need for thorough evaluation of candidates [12][13] Group 1: General Provisions - The selection of accounting firms must be approved by the Board of Directors and the shareholders' meeting, ensuring no interference from major shareholders before these approvals [1][2] - The selection process aims to maintain independence and integrity in auditing practices [1][2] Group 2: Responsibilities and Authority - The Audit and Risk Management Committee is tasked with developing policies for selecting accounting firms and supervising their audit work [5][6] - The committee must submit annual evaluation reports on the performance of the appointed accounting firms to the Board of Directors [5][6] Group 3: Quality Requirements for Accounting Firms - Selected accounting firms must possess qualifications related to securities and futures, and have a good record of professional quality [9] - The firms must have independent legal status and a solid organizational structure to ensure effective audit execution [9] Group 4: Selection Procedures - The document mandates that the selection of accounting firms should generally not exceed eight years, with a maximum extension to ten years under specific conditions [10][11] - The selection process must be conducted through public or invited bidding to ensure fairness and transparency [12][13] Group 5: Special Provisions for Reappointment - The company must notify the accounting firm 20 days in advance before termination or non-renewal of their services [22] - The document outlines the conditions under which the company may change accounting firms during the audit period [23] Group 6: Supervision and Penalties - The Audit and Risk Management Committee is responsible for monitoring the compliance of selected accounting firms with relevant laws and internal policies [26][27] - Serious violations by accounting firms can lead to penalties, including termination of their services and potential financial liabilities for responsible individuals [28][29]