HTC follows Corporate Governance Best-Practice Principles for TSEC/GTSM Listed Companies to:

1. Protect the rights and interests of shareholders.
2. Strengthen the powers of the board of directors.
3. Fulfill the function of the Audit Committee.
4. Respect the rights and interests of stakeholders.
5. Enhance information transparency.

Based on Regulations for the Establishment of Internal Control Systems by Public Companies, HTC takes into consideration the overall operational activities of itself and its subsidiaries in establishing an effective internal control system, and reviews it regularly, in order to keep up with changes in the environment and ensure that the design and enforcement of the system remain effective.

The Board of Directors and the management review the result of the internal control self-inspection conducted by each department and reports from the Internal Audit Department at least annually. Audit Committee also pay attention to and exercise oversight over this matter.

HTC executives pay special attention to the Internal Audit Department and its personnel and fully empower them to conduct audits, evaluate the internal control system and assess the efficiency of operations to ensure that such a system can be carried out on a continuous basis and can assist the Board of Directors and management to perform their duties effectively so as to ensure a sound corporate governance system.

In accordance with Article 29 of the Company’s Code of Corporate Governance Practices, the Company shall regularly (at least once a year) assess the independence and competency of certified accountants, and the Audit Committee shall regularly assess the independence and competency of certified accountants every year and submit them to the Board of Directors for a resolution. It shall be assessed in accordance with the independence and competency assessment standards (with reference to Article 47 of the Accountants Law and No.10 of the Code of Professional Ethics for Accountants) and audit quality indicators (AQIs include professionalism, quality control, independence, supervision, innovation ability andother 5 aspects and 13 indicators).

CPA assessment results were approved by the Audit Committee meeting held on October 25,2024 and the Board of Directors meeting held on October 28,2024, confirming that accountants Pan-Fa, Wang and Kuo Tyan, Hong of Deloitte & Touche both fulfilled the assessment standards for independence and competency. A letter of declaration was provided by Deloitte and Touche.

Internal Performance Evaluation

In November 2019, the board of directors of the company passed the director performance evaluation method to improve the function of the board of directors. Regular annual performance evaluations are conducted for the overall board of directors, individual directors, the audit committee and the remuneration committee, and self-assessment using questionnaires.

The performance evaluation items of the company's board of directors include the following five aspects: 1. Participation in company operations 2. Improving the quality of board decision-making 3. Board composition and structure 4. Director selection and continuing education 5. Internal control.

The measurement items for the performance evaluation of individual directors of the company include the following six aspects: 1. Mastery of the company's goals and tasks 2. Director's responsibilities cognition 3. Participation in the company's operations 4. Internal relationship management and communication 5. Director's professionalism and continuing education 6. Internal control.

The measurement items of the company's audit committee performance evaluation include the following five aspects: 1. Participation in the company's operations 2. Recognition of the audit committee's responsibilities 3. Improvement of the audit committee's decision-making quality 4. Audit committee composition and member selection 5. Internal control.

The measurement items for the performance evaluation of the company's compensation committee include the following four aspects: 1. Participation in the company's operations 2. Recognition of the compensation committee's responsibilities 3. Improving the decision-making quality of the compensation committee 4. The composition and selection of members of the compensation committee.

The Company completed the 2024 internal performance self-evaluation of the Board of Directors, Directors and members of each functional committee in January 2025. The full score of each assessment is 5 points. The internal performance self-evaluation scores of the Board of Directors and Directors were 4.74 and 4.81 respectively, and the self-evaluation scores of the members of the functional committees were 4.74 for the audit committee and 4.66 for the salary and compensation committee. In Summary, the board of directors and functional committees’ operating well, with active participation, high decision-making efficiency, and excellent collaboration, and will continue to strengthen based on the evaluation results to enhance the effectiveness of corporate governance.

External Performance Evaluation

The Company has commissioned Taiwan Corporate Governance Association to carry out an external assessment of the Board’s efficacy in 2022, and submitted the evaluation results to the Board of Directors on March 7, 2023.

• Name of external professional organization：Taiwan Corporate Governance Association
• Whether the external agency is independent：Independent
• Evaluation method：Online interview after reviewing relevant materials
• Standards：Evaluate from eight aspects including the composition of the board of directors, the guidance of the board of directors, the authorization of the board of directors, the supervision of the board of directors, the communication of the board of directors, the internal control and risk management, the self-discipline of the board of directors, and other support systems.
• The Board of Directors based on the recommendations of the TCGA as a reference for continuing to improve the functions of the Board of Directors. Please click here to view the external conclusion assessment statement from the Taiwan Corporate Governance Association.

Corporate Governance Officer

On April 28, 2021, the company's board of directors appointed Mr. ChiaTe Lu , the chief legal officer, as the supervisor of corporate governance. Provide directors with the information needed to execute their business, assist directors to comply with laws and regulations, etc. The company's corporate governance supervisor has the qualifications of a lawyer and has more than three years of experience as a legal supervisor in a public offering company, and has completed professional training in accordance with laws and regulations.