PTI properly takes care of waste generated during operation according to law. Besides reduction at the source and searching for alternative materials to reduce the amount of waste generated, it embarked on a program that follows the circular economy model. Recycling and regeneration are adopted so that waste is effectively re-utilized. Collection, classification, reduction, and recycling for replace “landfill” so that waste becomes resources. For example, disposable dining ware is no longer used in catering service; the online sign-off system is developed to reduce the use of paper; buffer materials used during shipment and the packaging process are recycled and re-utilized and empty barrels of raw materials are recycled and re-utilized, among others.

PTI commissions a third-party to measure and analyze perimeter noise on an annual basis. We continue to monitor noise caused by site activities and equipment, to ensure that the noise is under the limitation of regulated perimeter noise. The Hsinpu Plant (P1) is located in a residential area. To improve the living quality of the neighborhood, we installed noise sensors in the area to provide 24/7 real-time monitoring.

PTI strictly controls the use of chemicals in its processes. Moreover, air pollutants generated during the production process of machinery are collected through enclosed systems. Source segregation concepts are implemented in the treatment methods, with special gases pre-treated by front-end exhaust treatment equipment and subsequently diverted through pipelines to rear-end air pollution control equipment for final treatment. This effectively reduces emission concentrations to meet emission standards. We have installed complete air pollution control equipment based on the characteristics of the exhaust gas (such as zeolite concentrating runners, regenerative incinerators, direct-fired incinerators, activated carbon, scrubbers, etc.). Air pollution-related emission data are tested on a regular basis every year to ensure compliance with emission standards, and to prevent the adverse effects of air pollution on surrounding air quality, habitats, and human and animal health.

Established a waste disposal, treatment, and recycling vendor management mechanism in accordance with applicable regulations and the Responsible Business Alliance (RBA) Code of Conduct. Regular on-site audits and document reviews are conducted to evaluate vendors’ waste management practices, pollution prevention measures, operational safety, and environmental management, ensuring proper waste handling and reducing environmental risks. In 2025, audits were completed for 32 waste management vendors, including 13 collection vendors, 15 treatment vendors, and 4 recycling vendors. All vendors met environmental, safety, and health management requirements. Greenhouse gas inventory and verification activities were also promoted with partners to enhance environmental management capabilities.