Ardentec

Water Resources Risk Management

Ardentec's primary water usage is for the air conditioning cooling water required for 24-hour plant operations, followed by domestic water for employees and water used for firefighting purposes. In 2025, Ardentec's total water withdrawal was 437,372 metric tons, with total wastewater discharge amounting to 229,908 metric tons. All water sources are supplied by municipal tap water, and the water withdrawal points are located at government-designated
supply points at each operational site. There are no anticipated negative environmental or species impacts from the water extraction.
Ardentec uses the "Aqueduct Water Risk Atlas" tool developed by the World Resources Institute (WRI) to assess the water risk levels at the headquarters and subsidiary locations. By examining water sources and total water withdrawal data, we gain insights into the Company's overall water usage, potential impacts, and associated risks, enabling us to enhance water conservation efforts. Ardentec's operational sites in Taiwan, Singapore, South Korea, and Nanjing are located in low or low-moderate water stress areas.

Errata of data after ISAE 3000 assurance

Following the ISAE 3000 assurance conducted by the British Standards Institution (BSI), the total water withdrawal of Ardentec was confirmed as 398,003 metric tons in 2023 and 406,222 metric tons in 2024.

Notes:
1. For headquarters (excluding Paoching site), Korea subsidiary, and Nanjing subsidiary, the total water withdrawal was calculated based on 12 months of water bills.
2. For the Singapore subsidiary, the total water withdrawal was calculated based on 12 months of water bills, with deductions for the meter readings of the leasing company.
3. For the Paoching site and the Giga subsidiary, the total water withdrawal was calculated based on utility payment records provided by the landlord.

Water Conservation Management

Although Ardentec has relatively low water consumption and is not a water-intensive enterprise, it remains committed to the goals of reducing, recycling, and reusing water resources. Ardentec Headquarters has upgraded water-saving facilities, implemented recycling of air-conditioning condensate, and reused wastewater from the reverse osmosis (RO) process for air-conditioning cooling water. These reduction, recycling, and reuse measures maximize the circulation of water resources, reduce water consumption, and enhance water conservation performance. In 2024, the Talent Site at the headquarters introduced new recycling and filtration systems for cooling water discharge, air conditioning, and air compressor condensate, enabling water to be recirculated and reused. In 2025, the headquarters' water recycling totaled 38,051 tons, accounting for 8.7% of total water withdrawal.

Waste Reduction Management

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Water Resource Management

Water Resource Management

Water Conservation Management

Waste Reduction Management