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Identity of stakeholders, key issues of concern, communication channels

Interested Parties	Issues Concerned	Communication Frequency	Response method and communication frequcncy
Shareholders	1.Corporate governance ⒉Operating performance ⒊Shareholders participation	Contact person: Spokesperson General Manager Chen Tel: (02)2509-0036 Email: tstcomp@tsgroup.com.tw 1.Announcement of important information from time to time 2.At least one corporate briefing session per year 3.Monthly operating income announcement 4.Regularly announce financial reports and annual reports 5.Hold a regular shareholders meeting once a year	1.Completed 33 material information announcements 2.Completed two investor conferences 3.Completed the monthly operating revenue announcement 4.Completed quarterly financial reports and annual reports 5.Convened the annual general meeting on June 20, 2025 6.The spokesperson has good interaction and communication with shareholders.
Customers1.	1.Corporate governance 2.Service quality 3.Customer protection and communication	Contact person: Spokesperson General Manager Chen Tel: (02)2509-0036 Email: tstcomp@tsgroup.com.tw 1.Regularly communicate the integrity management policy 2.Announcement of important information from time to time 3.At least one corporate briefing session per year	⒈Reported to the Board of Directors on March 11, 2026, regarding the implementation and execution of ethical corporate operations. 2.Completed 33 material information announcements 3.Completed two investor conferences 4.The Company has good interaction and communication with its customers, and there have been no customer complaints.
Suppliers	1.Corporate image 2.HSE 3.Supplier management 4.Supplier communication channels	Contact person: Mr. Wei of Management Department/ Mr. Kuo of Construction Business Department Tel: (02)2509-0036 Email: service@tsgroup.com.tw 1.Review and revise regulations every quarter 2.On-site visit from time to time 3.Evaluation at least once a year	1.Completed supplier management procedures and supplier survey 2.Disclosed and publicized on the official website 3.Increase supplier survey rate 4.The Company has good interaction and communication with its suppliers, and there have been no breaches of contract
Employees	1.Employee benefits 2.Labor-management relations 3.Operating performance	Contact person: Assistant Manager Lin of Chairman's Office Tel: (02)2509-0036 Email: vivian.lin@tsgroup.com.tw 1.Regularly review health checks, group insurance, various subsidies, etc. 2.Pre-employment training for new employees, education and training for on-the-job employees, and irregular health lectures 3.Hold labor-management meetings once a quarter 4.Convene the Welfare Committee meeting once a quarter	1.Completed pre-employment training for 7 new hires, with al employees averaging approximately 28 hours of training. 2. Completed the quarterly labor-management meetings 3. Completed the quarterly Welfare Committee and Supervisory Retirement Committee meetings. 4. The Company has good interaction and communication with its employees, and there have been no complaints
Competent authority	1.Legal compliance 2.Corporate governance 3.Risk management 4.Communication with competent authorities	Contact person: Assistant Manager Lin of the Finance Department/ Ms. Yeh of the Management Department Tel: (02)2509-0036 Email: tstcomp@tsgroup.com.tw 1.Regular review and amendment and revision of laws and regulations 2.Participation in policy forums of competent authorities and revisions of relevant laws and regulations from time to time 3.Cooperation with the competent authority for supervision and inspection	1.Completed the regulatory review and amendment. 2.Completed participation in policy forums held by the competent authorities and related law revisions. 3.Cooperation with the competent authority for supervision and inspection 4.The Company maintains good interaction and communication with the competent authority and its employees, and there have been no violations.