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Stakeholder Identification

Identifying Stakeholders

EOI will review the company's stakeholders in 2024, and through joint discussion and review by the company's senior executives and department heads, the actual and potential negative impacts and positive effects on the stakeholders will be determined based on the company's operating activities and GRI revision requirements. The scores will be added up and ranked. Those with a total score greater than 10 will be listed as the company's important stakeholders in 2024. We have identified 15 categories of key stakeholders in total and 8 major stakeholders among them.

Stakeholder identification result

Topics of Concern to Stakeholders and Communication Channels

The questionnaire survey on sustainable development issues is not the only channel for EOI to understand the issues that stakeholders are concerned about. In the operation process, EOI uses multiple communication channels and an open and transparent manner to continuously communicate and discuss important issues with various stakeholders to ensure that the concerns and expectations of various stakeholders are incorporated into EOI's operating strategy. and goals, and respond to stakeholders with tangible operating results. In addition to regularly summarizing relevant achievements and reviewing the results of discussions with stakeholders, the Company also submits reports to the Board of Directors for confirmation every year. The communication with all stakeholders in 2025 was reported to the Board of Directors on December 30, 2025. Summarize the communication channels with various important stakeholders in 2025:

Important Stakeholders Communication Channels Communication Frequency Communication status as of 12/23, 2025
Customers
Phone No., E-mail Any time Instant messaging with customers at any time to provide timely customer service.
Visit customers Non-scheduled Visit customers irregularly to communicate customer expectations and new product requirements.
Customer audit, satisfaction survey Annually The 2025 customer satisfaction survey has been completed, with a satisfaction rate of 90.86%. (The original control target was ≥85%, and the target for fiscal 2024 was 94.08%)
Customer satisfaction survey regarding violations of customer health and safety, privacy, green regulations, and trademark regulations: 0 cases, with a satisfaction rate of 94.2%.
Abnormal event meeting Non-scheduled Provide high-efficiency and high-quality response during operation process emergencies
Employees
Performance interviews Annually Conduct regular audits every year to understand the status of employees
1. New employee probation assessment (three months after reporting)
2. Annual employee assessment (the assessment for 2024 has been completed in January 2025; the assessment for 2025 will be conducted in January 2026)
Employee satisfaction survey Annually Employee satisfaction in 2025 is 82.7%, down 0.8% from last year (83.5%) (the original control target was ≥ 80%)
Labor Management Meetings Quarterly The 2025 labor-management meetings were held on 3/19, 6/18, 9/15, 12/10.
Employee Benefits Meetings Quarterly The 2025 Welfare Committee meetings were held on 3/24, 6/11, 9/18, 12/18.
Internal Information Announcement Any time Issue internal announcements based on actual circumstances
Employee feedback mailbox Any time Collect employee opinions through e-mail and paper survey
Investors
Convene general shareholders meeting Annually The 2025 shareholders' meeting was held on May 29 and an extraordinary shareholders' meeting was held on October 14.
Convene board of directors meeting Quarterly In 2025, the board of directors meetings were held on 3/6, 4/4, 5/8, 5/29, 6/19, 7/24, 8/12, 8/15, 9/24, 11/13, 12/30.
Update company website Non-scheduled Update relevant public information in a timely manner according to the needs of various stakeholders.
Update the Market Observation Post System information Non-scheduled  In accordance with the various regulations of the Financial Supervisory Commission, relevant operational announcements are made at the Observation Station.
Suppliers
New Supplier Evaluation Irregular Suppliers for customized or collaborative development projects are evaluated by an assessment team.
Annual Supply Balance and Quarterly Operations Meeting (QBR) Annual Annual assessments are conducted on the top 5 suppliers for key materials, to be completed before Q1 of the following year.
Supplier Annual Audit and Anomaly Correction Audit Annual Supplier audits and assessments have been 100% completed.
Supplier Environmental and Safety Risk Assessment Form Irregular For new suppliers (manufacturers whose delivered products generate hazardous industrial waste during the production process), a supplier risk assessment will be conducted.

Stakeholder communication status

In addition to regularly summarizing relevant achievements and reviewing the results of discussions with stakeholders, we also submits reports to the Board of Directors for confirmation every year. The communication with all stakeholders in 2025 was reported to the Board of Directors on December 30, 2025.

Stakeholder communication channels


Customer service contact window
Contact Tel.: +886-37-539000
Contact window: Each sales location
E-mail: service@eoi.com.tw

Employee service contact window
Contact Tel.: +886-37-539000
Contact windows: staff@eoi.com.tw
Occupational ethics: right@eoi.com.tw

Stock Affairs Office
Contact person: Special assistant Ching-Hwei Liu
Tel.: +886-37-539000
E-mail: ir@eoi.com.tw

Corporate Information
Spokesperson: Vice President Jun-Deh Wu
Tel.: +886-37-539000
E-mail: ir@eoi.com.tw

Stock transfer agency contact method
Taishin Securities Stock Agency Department
Tel.: 02-25048125
Address: B1 F., No. 96, Section 1, Jianguo N. Rd, Zhongshan District, Taipei City

Engagement Strategy for Degree of Concern

The key stakeholders' concerns involve the investment and arrangement of funds, workforce, and related resources. There will also be mutual exclusion under limited resources, so it must be gradually planned and implemented during the business operation process. Therefore, we also self-examine the relationship between various stakeholders and Excellence Opto. Inc. during the engagement process with key stakeholders. The goal is to consider the purpose and focus of the response before generating a short-term approach and a long-term strategic plan. The table below shows Excellence Opto. Inc.'s current engagement process and future strategies review at the end of 2023.

Considerations and Strategies for Important Stakeholder Engagement

Stakeholders Coping and Response Method Short Term Approach Long Term Strategy
Customers Focus on product safety and conduct verification using various management systems and product specifications to provide customers with the best service quality and product safety commitment. Continue to provide precision LED components, LED automotive modules, automotive electronics, and controller design, and develop mass production services to become a supplier to the world's major automotive lighting clients worldwide. Become the industry's leading supplier with comprehensive sustainability performances according to our environmental, social, and governance achievements; and the best key LED modules and automotive electronics supplier worldwide.
Employees Recruit suitable talents for Excellence Opto. Inc. under the spirit of skill management; invest in education & training; and continue to improve the working environment, remuneration, and benefits of employees. Strengthen labor health and safety, improve education & training to develop employee skills, and continuously enhance various internal systems and facilities to improve employee satisfaction. Establish skill expertise talent reserve training plan and development, strengthen the knowledge management environment to transfer knowledge effectively, and help employees achieve their career goals and realize the value of their work.
Investors Regarding long-term economic trends, the sustainability integration strategy has become the focus of investors' attention. Therefore, the operational goals and ESG sustainability combination has become the future development trend of Excellence Opto. Inc. The Company will gradually establish the various management mechanisms according to the Corporate Governance Blueprint of the FSC and implement various policies and action plans to enhance the businesses of Excellence Opto. Inc. while achieving the sustainability goals. We aim to reference model sustainability enterprises and integrate all aspects of sustainability into our operational strategy to become the leader in the industry's ESG performance and drive the economic benefit growth by improving ESG performance.
Suppliers Establish an operating mechanism for long-term cooperation with suppliers, and establish stable delivery quality and delivery during the new product development and mass production phases to ensure sound delivery quality and delivery time and meet customer needs. Invite key material suppliers to participate, speed up the product development schedule, and maintain delivery quality during the new development phase. Estimate material procurement quantity and delivery times according to long-term production schedule forecasts. Assist suppliers with stable and accurate scheduling, and submit high-quality materials on time. Optimize the overall supply chain system, establish strategic partners, improve the procurement process and supplier communication efficiency via digital procurement planning and execution, and establish VMI to control raw material risks. Plan the sustainable supplier management mechanism and gradually require suppliers to fulfill their environmental and social obligations.

Analysis of Major Sustainability Topics

EOI uses a systematic analysis model to identify the sustainable development issues that stakeholders are concerned about, which serves as a reference for information disclosure in the report, so as to effectively communicate with stakeholders and analyze the various stakeholders based on the questionnaire collection results. Issues of concern to stakeholders serve as a reference for communication, response and interaction with stakeholders. The main procedures of the 2024 EOI’s materiality analysis model are as follows:

Major Sustainability Themes Identification

Based on the above four-step process analysis, we re-examined the issues in 2024 and identified 15 issues from 38 sustainable issues, and consolidated them into 13 for management:

Significant Issues Impact Statement


Please see pages 35-40 of this year's sustainability report for details. Thank you.