To optimize energy use and drive continuous improvement in energy performance, GMTC has implemented an ISO 50001-compliant Energy Management System (EnMS).

At both the Xinying and Liuying Plants, dedicated energy management and audit teams are established to monitor energy consumption, conduct regular performance reviews, and implement targeted energy-saving measures. The overarching objective is to reduce energy intensity across all operational units and minimize the Company's environmental impact.

Key elements of the energy management framework include:

• Energy Baselines & Performance Indicators (EnPIs):

• Defined for all major systems to track performance trends and measure improvement progress.

• Significant Energy Use (SEU) Evaluation:Based on audit data, SEUs are identified and prioritized for action.

• Process Integration:Energy-saving principles are integrated into the design and procurement of new equipment, systems, and infrastructure upgrades.

• Operational Control:All energy-using equipment is subject to standardized operation procedures, routine inspections, and performance evaluations.

• Employee Training & Awareness:Regular training is conducted to enhance energy literacy, reduce communication gaps, and build a culture of energy consciousness.

Through these efforts, GMTC embeds energy efficiency into operational planning and decision making processes, supporting long-term sustainability and carbon reduction goals.

GMTC has developed standardized energy audit procedures to assess activities, products, and services that significantly affect energy performance. A comprehensive energy inventoryis maintained to identify major energy-consuming equipment and systems, based on which improvement action plans are formulated.

In accordance with internal regulations, all production units are required to organize at least one energy-related training session per year. These sessions aim to ensure that employees understand the Company's energy policy, objectives, performance indicators, and improvement measures. Employees are also encouraged to pursue energy-related certifications where relevant to their roles, further enhancing technical capacity and professional development.

The execution results for 2024 are as follows:

The total energy consumption of the GMTC amounts to 2,411,799 GJ. The purchased non-renewable fuel has a calorific value of 1,667,174 GJ, accounting for 69% of the total energy consumption, primarily utilizing natural gas, which is mainly used in boilers and heat treatment furnaces. The purchased non-renewable electricity is 739,795 GJ, while the self generated renewable energy is 4,831 GJ. The electricity is primarily applied to process equipment and auxiliary equipment such as air compressors, chillers, and water treatment facilities, accounting for 31% of the total energy consumption. The sold renewable electricity amounts to 2,752 GJ.

GMTC actively supports the Tainan City Government’s "Solar City of Tainan"initiative to promote low-carbon urban development. Since 2012, GMTC has installed rooftop solar photovoltaic (PV) systems at its Xinying and Liuying plants to maximize rooftop space utilization, enhance thermal insulation, and increase renewable energy self-sufficiency.

Key Statistics as of 2024:

• Total Installed Solar PV Capacity: 3,158.03 kW

• Cumulative Renewable Energy Generation (2024): 2,110 MWh

• Self-consumed Renewable Energy (2024): 1,344 MWh

• Estimated Carbon Emissions Reduction (2024):

• Based on Taiwan’s official electricity emission factor of 0.494 kg CO₂e/kWh(2023)

• Self-consumption reduction: ~664 metric tons CO₂e

• Total estimated reduction: ~1,042 metric tons CO₂e

GMTC remains committed to expanding renewable energy infrastructure and optimizing on-site

green power utilization, thereby contributing to both national decarbonization goals and long term

energy resilience. (calculated in 2024 based on the annual electricity emission coefficient of 0.494 kg/kWh

announced by the Bureau of Energy in 2023)

GMTC remains committed to carbon reduction through an inclusive and forward-looking energy strategy. The Company closely monitors policy developments, industry trends, and academic insights to guide decision-making and long-term planning.

In 2024, GMTC participated in Taiwan Power Company's Small-Scale Green Electricity Procurement Program, securing 400,000 kilowatt-hours of green electricity annually, starting from 2025, to increase the share of renewable energy at office sites.

The Company continues to prioritize clean energy deployment in infrastructure planning. Rooftops of future new buildings will be used for solar photovoltaic system installations to further expand renewable energy adoption and support the dual goals of economic development and environmental sustainability.

In accordance with national regulations requiring designated energy users to achieve an annual electricity savings rate of at least 1%, GMTC has implemented a wide range of energy efficiency initiatives.

For the upcoming regulatory cycle (2025–2028), both plants have set an electricity savings target of 1.5% for 2025, reflecting a proactive response to updated policy requirements and reinforcing GMTC's internal energy efficiency objectives. These continuous improvement efforts align with the Company's broader sustainability strategy and reinforce its commitment to responsible energy use and climate action.

To reduce greenhouse gas emissions during the production process, we have invested in recent years in green energy equipment installation, equipment renovation or replacement, replacing heavy oil with natural gas, and replacing old equipment with high-efficiency energy-saving equipment.

From January to October 2024, a total investment of NT$3,718,000 was made to replace air compressors and water pumps. The estimated annual electricity savings are 769,000 kWh, and the annual carbon reduction is approximately 381 tons of CO₂e. The projects are listed below.