In recent years, water shortages occurred frequently in Taiwan, compelling the government and enterprises to pay attention to the scarcity of water resources and their impact on production and operations. RichWave has conducted a water risk assessment for its operating locations in Taiwan using the Aqueduct Water Risk Atlas of the World Resources Institute (WRI). The results show that the overall water risk level for the Taipei head office and the Zhubei office is low to medium.

The water risk level in the areas surrounding the Taipei head office and the Zhubei office is low to medium. Both offices use tap water and no water is sourced from areas under supply stress.

Water consumption at RichWave's operating locations mainly consists of tap water for office use and we do not extract water from water shortage zones and waste water is discharged centrally from the Science Park to the water processing plant. Consequently, total water consumption cannot be calculated. Water consumption is typically measured based on usage in industrial manufacturing processes. However, for office domestic water use, the volume of discharged wastewater is considered equal to the volume of water withdrawal. As a result, the net water consumption is zero. In 2025, RichWave's tap water withdrawal was 3.92 megaliters, a 3.7% increase compared to 2024. Additionally, our WI in 2025 was 12.9 megaliters per thousand people, a 3.2% increase from 2024. We will continue to enforce water resource management for the sake of elevating water efficiency and making sure water resources are utilized most efficiently.

We believe that water is an extremely valuable shared resource, so we regularly control our water consumption in our daily operations and continue to conduct water-saving campaigns, hoping to instill water conservation awareness in our colleagues' everyday life. RichWave’s current leased office is located in a park where overall water consumption is centrally managed. The Company is actively cooperating with the park’s management unit to implement water-saving measures, such as reducing the frequency of garden irrigation, discontinuing the use of landscape water features, installing water-saving toilets and faucets, and continuously exploring and testing additional solutions to minimize water resource waste.

Water Resource Management Target

RichWave's Water Consumption Over the Last 3 Years

Note1. In terms of water resources statistics, RichWave's boundary includes our Taipei head office and Zhubei office.

Note2. Overall WI = Total tap water withdrawal for all business locations in Taiwan (megaliters) / Total number of employees in Taiwan (thousands).

Note3. The calculation of tap water consumption, previously based on either the public utility bill or the rental area ratio, was adjusted in 2025 to be based solely on the public utility bill, with retrospective adjustments applied to the period from 2022 to 2024.

Note4. All water sources used are tap water (third-party water) and freshwater (≤1,000 mg/L total dissolved solids), and no business locations are located in water- stressed areas.