2025 Annual Internal Control Self-Evaluation Report

Yitong Century Technology Co., Ltd. 2025 Annual Internal Control Self-Evaluation Report To all shareholders of Yitong Century Technology Co., Ltd.: In accordance with the "Basic Norms for Enterprise Internal Control" and its supporting guidelines, the "Shenzhen Stock Exchange Listed Company Self-Regulatory Management Guide No. 2—Innovative Board Listed Company Standardized Operation (2025 Revision)," and other relevant internal control regulatory requirements (hereinafter referred to as the "Enterprise Internal Control Normative System"), combined with the company's (hereinafter referred to as the "Company") internal control system and evaluation methods, and based on the daily supervision and special supervision of internal control, the Company has conducted a comprehensive evaluation of the effectiveness of its internal control as of December 31, 2025 (the base date of the internal control evaluation report). I. Important Statement In accordance with the relevant provisions of the Enterprise Internal Control Normative System, establishing and effectively implementing internal control, evaluating its effectiveness, and truthfully disclosing the internal control evaluation report are the core responsibilities of the Company's Board of Directors. The Audit Committee is responsible for supervising the work of the Board of Directors in establishing and implementing internal control, and management is responsible for organizing and leading the daily operation of the Company's internal control. The Company's Board of Directors and all directors and senior management guarantee that the content of this report is free from any false records, misleading statements, or significant omissions. The objectives of the Company's internal control are: to reasonably ensure that business operations are legal and compliant, assets are safe, financial reports and related information are true and complete, operating efficiency and effectiveness are improved, and the Company's development strategic goals are achieved. Due to the inherent limitations of internal control, it can only provide reasonable assurance for the achievement of these objectives. In addition, changes in internal and external circumstances may lead to internal control measures becoming inappropriate, or the degree of compliance by relevant parties with control policies and procedures may decrease. Based on the results of this internal control evaluation, there is a certain risk in inferring the effectiveness of future internal control. II. Conclusion of Internal Control Evaluation Based on the Company's standards for identifying material weaknesses in financial reporting internal control, as of the base date of the internal control evaluation report, the Company has no material weaknesses in financial reporting internal control. The Board of Directors believes that the Company has maintained an effective financial reporting internal control in all material aspects in accordance with the requirements of the Enterprise Internal Control Normative System and relevant regulations. Based on the Company's standards for identifying material weaknesses in non-financial reporting internal control, as of the base date of the internal control evaluation report, the Company has found no material weaknesses in non-financial reporting internal control. During the period from the base date of the internal control evaluation report to the issuance date of this report, no factors have occurred that affect the conclusion of the internal control effectiveness evaluation. III. Internal Control Evaluation Work (I) Scope of Internal Control Evaluation The Company follows a risk-oriented approach to determine the entities, business matters, and high-risk areas included in the evaluation scope. The evaluation scope covers the Company's headquarters, all wholly-owned and controlled subsidiaries, and comprehensively includes the entire process of the Company and its subsidiaries' business management. It mainly involves corporate governance, organizational structure, development strategy, audit supervision, human resources, social responsibility, corporate culture, procurement, sales, asset management, fund management, fundraising management, external investment, external guarantees, related party transactions, research and development, financial reporting, comprehensive budgeting, contract management, seal management, internal information transmission, information system management, information d