| Message from the Chairman

Letter from tsti Chairman: Cultivating Digital Trust and Co-creating Sustainable Resilience

The world currently stands at the intersection of geopolitical shocks, extreme climate challenges, and rapid digital technology iterations. In 2025, Tatung System Technologies Inc. (tsti) demonstrated extraordinary adaptability amid changing environments, with consolidated revenue surpassing NTD 5 billion to reach a record high. This milestone represents not only numerical growth in operating performance, but also strong recognition from customers for our long-standing dedication to ICT expertise and ethical governance. In the face of the AI wave, we consistently adhere to management principles of "clear goals and pragmatic execution," ensuring that tsti takes the most practical steps to transform the positive influence of technology into tangible sustainability value.

Digital Trust Governance: Building a Protection Network for Sustainable Operations
In a highly interconnected digital era, "trust" is a corporate entity's core intangible asset. In 2025, tsti elevated "Digital Trust" to a strategic priority. By integrating dual ISO/IEC 27001 and ISO/IEC 27701 certifications, we constructed an information security and privacy governance framework aligned with international standards. This not only earned us the BSI Digital Trust Excellence Award and the Platinum Award for Taiwan Corporate Sustainability Reports (TCSA), but also deeply ingrained stakeholders' trust in us. To reinforce governance resilience, tsti's Board of Directors officially established the "Sustainability and Risk Management Committee" at the end of 2025, embedding ESG risk control into the core of decision-making. From the data accuracy of greenhouse gas (GHG) inventories to real-time defense against cybersecurity risks, tsti is committed to building a transparent, traceable governance framework, ensuring that stakeholders' rights are fortified with the solid protection amid digital waves.

Twin-Axis Empowered Transformation: Responding to Societal Needs with Technological Resilience
Facing the market's strong demand for high-performance computing, tsti not only focuses on technology development, but also pays close attention to the underlying sustainability implications. By integrating the Group's profound foundation in power management and green energy, we provide customers with a turnkey "AIDC (AI Data Center)" solution that balances energy efficiency and performance, helping industries address energy consumption pain points during digital transformation. In 2026, we will progressively introduce Agentic AI and application templates, aiming to assist clients in optimizing process efficiency and mitigating labor shortages, rather than merely pursuing technology stacking. We advocate "Technology for Common Good." Through Smart IoT and AIoT solutions, we apply technology to low-carbon smart buildings and precision carbon footprint tracking, empowering customers to achieve Twin Transformation across digital and green dimensions, while jointly fulfilling our responsibility as global corporate citizens.

People-Centric Approach: Cultivating Resilient Workplaces and Talent Sustainability
A corporate entity's grand vision relies on an outstanding team for execution. tsti regards employees as our most valuable assets. We continuously promote Diversity, Equity, and Inclusion (DEI) policies, striving to foster an equal working environment with a strong sense of belonging. In 2025, beyond focusing on colleagues' professional growth, we emphasized "Mental and Physical Resilience," caring for every partner's health through the "Corporate Health Coach" program and comprehensive benefit measures. In an era of rapid technological iteration, we not only assist employees in mastering digital tools, but also cultivate their awareness of digital governance. Only with talents possessing both professional expertise and ethical literacy can tsti consistently deliver warm, professional services in an ever-changing market.

Social Engagement and Technology for Common Good
Looking forward, tsti will continue to uphold a pragmatic spirit, connecting Group resources with societal needs to become the most trusted navigator in industrial transformation. We sincerely appreciate the steadfast support from all shareholders, customers, and partners. Let us join hands in the digital era to create a more resilient, transparent, and prosperous sustainable future.

Please refer to the Sustainability Report [PDF] relevant chapter for more details.