Environmental Protection and Occupational Safety
Energy and Carbon Management
USI integrates environmental sustainability into its business strategy and operations. Guided by the Board of Directors and senior management, the Company implements ISO 14001, ISO 50001, and ISO 14064-1 management systems, promotes environmental awareness among employees, and continuously improves key environmental aspects, including emissions, waste, chemicals, water, and energy management. Through ongoing improvement and transparent disclosure, USI is committed to reducing environmental impacts and fulfilling its environmental responsibilities.
USI continues to promote greenhouse gas reduction initiatives and conducts annual greenhouse gas inventories in accordance with the ISO 14064-1 standard, with verification by an independent third-party assurance body. In 2025, total greenhouse gas emissions (Scope 1 and Scope 2, location-based) amounted to 165,792.53 metric tons CO2e, an increase of 2,818.86 metric tons CO2e compared with 2024. Greenhouse gas emissions intensity was 3.17 metric tons CO2e per million CNY in revenue, representing an increase of 0.12 metric tons CO2e from the previous year.
We conduct 15 categories of significant identification and inventory of upstream and downstream activities in Scope 3, the results of which were verified by a third-party verification unit as follows:
| Category(1) | Description | Greenhouse Gas Emissions |
| 1 | Purchased goods and services | 3,068,573.97 |
| 2 | Capital goods | 154,563.90 |
| 3 | Fuel and energy related activities | 24,788.34 |
| 4 | Upstream transportation and distribution | 15,937.45 |
| 5 | Waste generated in operations | 525.76 |
| 6 | Business travel | 1,116.22 |
| 7 | Employee commuting | 12,872.41 |
| 8 | Upstream leased assets | 21,798.11 |
| 9 | Downstream transportation and distribution | 42,261.99 |
| 10 | Processing of sold products | N/A(2) |
| 11 | Use of sold products | 619,450.72 |
| 12 | End-of-life treatment of sold products | 6,054.95 |
| 13 | Downstream leased assets | N/A |
| 14 | Franchises | N/A |
| 15 | Investments | 15,208.08 |
| Total | 3,983,151.90 | |
Note:
1. The data presented came from the ISO 14064-1:2018 inventory results, rounded to the 2nd decimal place, converted to the GHG Protocol for disclosure
2. N/A: Non-significant after assessment of the indirect emissions materiality criteria in accordance with ISO 14064-1:2018
Electricity consumption accounts for approximately 96.7% of USI's greenhouse gas emissions. Therefore, improving electricity efficiency and reducing power consumption are key to lowering the Company's carbon footprint. In 2025, total energy consumption was 1,146,070 GJ, covering both manufacturing sites and office facilities. Energy consumption at manufacturing sites totaled 1,139,916 GJ, representing an increase of 59,452 GJ compared with 2024. Energy intensity was 21.8 GJ per million CNY of revenue in 2025, an increase of 8% from 20.2 GJ per million CNY in 2024. Compared with the baseline year of 2015, when energy intensity was 29.1 GJ per million CNY, the Company achieved a 25.1% reduction in energy intensity.
| Category | Direct Energy Consumption | Indirect Energy Consumption | Total Energy Consumption | ||
| Diesel | Gasoline | Natural Gas/Liquid Petrol Gas | Electricity | ||
| 2025 | 926.1 | 1,846.4 | 30,015.5 | 1,107,127.9 | 1,139,915.9 |
| 2024 | 858.2 | 2,159.6 | 27,566.2 | 1,049,880.0 | 1,080,463.9 |
| 2023 | 1,225.2 | 2,277.3 | 30,110.9 | 1,042,555.7 | 1,076,169.2 |
| 2022 | 1,266.0 | 2,215.4 | 28,307.9 | 1,063,884.0 | 1,095,673.3 |
USI actively promotes the adoption of renewable energy. In 2026, the Company purchased a total of 255,500 MWh (920,010 GJ) of renewable energy certificates, including International Renewable Energy Certificates (I-RECs), Green Electricity Certificates (GECs), and Taiwan Renewable Energy Certificates (T-RECs). Of this amount, 255,414 MWh (919,700 GJ) were retired to offset carbon emissions associated with conventional electricity consumption at manufacturing sites in 2025. Full offsets were achieved at the Zhangjiang, Jinqiao, Huizhou, Kunshan, Mexico, and Vietnam sites, while partial offsets were applied to the Nantou site. Revenue generated from low-carbon products manufactured at facilities utilizing renewable energy accounted for 87% of the Company’s annual revenue.
| Category | Item | Scope 1 | Scope 2 | Total |
|---|---|---|---|---|
| Location based | GHG Emissions（Metric tonnes CO2e） | 5,459.05 | 160,333.48 | 165,792.53 |
| Percentage（%） | 3 | 97 | 100 | |
| Market based | GHG Emissions (Metric tonnes CO2e） | 5,459.05 | 18,154.37 | 23,613.42 |
| Percentage（%） | 23 | 77 | 100 |
