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Green Future

GHG Emission

The 2020 annual GHG inventory is conducted following the ISO 14064-1:2018 standards. The boundary includes all plants in Taiwan and Mainland China, and the base year varies with the characteristics of each plant. The total emissions of Scope 1 and 2 in 2020 were 963,928 tons of CO2e, an increase of 8% compared to 2019. There is an increase of 1.2% shown by the calculation of the intensity value per million revenue. The main reason for the increase in carbon emissions and intensity is that Unimicron (Huangshi) in Mainland China began to collect GHG data by the expansion of the inventory boundary in 2020. To reduce GHG emissions caused by direct energy use, Luzhu II Plant and QunHong Dacheng Plant in Taiwan have changed the boiler oil system to natural gas fuel.

GHG Emissions and Intensity

Base Year of Each Plant’s GHG Scope 1 and 2

Energy Saving Plan

The reduction plan over the years has been mainly focused on electricity and gasoline. Improving efficiency is the top priority of the implementation of energy-saving projects in Unimicron’s Taiwan Facilities. To reduce the risks of future energy price fluctuations and restrictions, we shall also actively promote energy-saving and electricity-saving actions in various plants. Each plant will continue to promote projects, such as rectifier improvement, variable-frequency energy-saving, production deployment, equipment energy-saving mode setting, etc.

Results of Past Reduction Plans

Participation in Carbon Trading

Shenzhen City, Mainland China, took the lead in launching carbon emissions trading in June 2013. For companies included in the key energy consumption statistics (monthly emissions> 10,000 tons of carbon emissions, Unimicron (Shenzhen)’s has an average of 15,000 tons/month in 10-12 years) must conduct compulsory carbon emissions trading (i.e., emission control units). Therefore, Unimicron (Shenzhen) begins to join the Shenzhen carbon trading mechanism in 2014. As of 2019, the cumulative carbon emissions were approximately 718,600 tons. Based on industrial value-added, retrospectively, the due quota in 2019 was about 99,300 tons, and the total cumulative quota was about 879,800 tons from 2014 to 2019. After offset, there is still a balance of about 161,200 tons, which is temporarily retained without trading. Since 2016, Unimicron (Shenzhen)’s annual carbon emissions have exceeded the carbon emission quotas, and the remaining carbon emission quotas in the future will be used to offset Unimicron (Shenzhen)’s annual carbon emissions. Due to the impact of the pandemic, the 2020 carbon trading mechanism was temporarily closed and data will be disclosed after government agencies operation.

Raw Materials

Unimicron always aims to provide high-quality and environmentally friendly products to our customers around the world. Our procurement philosophy for raw materials is also mainly based on environmental friendliness. The three major raw materials used for product production are substrates, potassium gold cyanide, and film. The usage in 2020 was about 2.926 million sheets/13.114 million PNL, 2,926 kg and 176,000 rolls/3.594 million PNL, respectively. There are 100% virgin materials, and no recycled materials are used. At the same time, we also promote the recycling of packaging materials. For the trays used when the Carrier is shipped, we will give priority to the purchase for repeated use, and after shipping to customers, trays will be recycled by Unimicron’s suppliers for reuse. In 2020, the purchased quantity of recycled trays accounted for approximately 51% of the total purchased trays.

Main Raw Material Usage

Energy Management

The fossil fuel used by Unimicron in 2020 includes gasoline (0.0024 X 109 million joules), diesel fuel (0.0166 X 109 million joules), and natural gas (0.3906 X 109 million joules), and indirect energy is electricity (5.6 X 109 million joules) and steam (0.0001 X 109 million joules); the total energy consumption is 6.0 X 109 million joules, and the consumption intensity is 0.68 X 105 million joules/million revenue. Among them, the direct energy consumption was the highest in natural gas that is used for heating equipment in boiler equipment and kitchen, and the indirect energy consumption is the highest in purchased power. Starting from 2019, the plant’s liquefied petroleum gas used for kitchen has been replaced by electricity in Mainland China. Since 2014, the Group has gradually changed the fuel of boilers from diesel to cleaner natural gas. As of 2020, the total consumption of diesel fuel has been reduced by 75% compared with 2014. The total consumption of electricity is 17.68 kWh/million revenue and has been reduced by 0.1% compared with 2019.

Energy Consumption

Electricity Consumption Intensity

Water Resources

Limited by the industry’s characteristics of relying on stable water resources, water source and volume have become one of the most important keys to the continued operation of Unimicron. There are significant differences in rainfall and flow volume in the current high-water period and low-water period in Taiwan, and many meteorological and hydrological extremes have occurred. In response to the risk of a water shortage caused by Taiwan's topography and climate change, the use and retention of water resources had been evaluated at the initial stage of establishing each of Unimicron's plants. Storage tanks have been set up in the plant areas, and the water storage capacity of each regional reservoir and the water consumption status of each plant is monitored and managed in normal times to ensure that the plant does not have an immediate water shortage crisis due to lack of water resources, and the ability to withstand water shortages is improved. To effectively manage the use of water resources, mitigate impacts to environmental ecology and continuously enhance the water resource use efficiency, the Shanying plants implemented the world’s only sustainable water management standards from Alliance for Water Stewardship Standard (AWS) and became the first Taiwanese PCB manufacturer achieving platinum certification therefrom according to the evaluation of SGS Taiwan Ltd.

All of Unimicron’s plants are not located in areas with frequent water shortages and drought, and the main water source is tap water. Unimicron’s Taiwan Facilities still also use well water and rainwater. In 2020, the water consumption of each plant accounts for a small proportion of the water supply in the water intake area, and there is no significant impact on the water intake area (>5%).

Water Assessment Results

Annual Water Consumption and Annual Water Withdrawal from Water supplies

We cooperate with government policies to regulate water use. Although losses and disasters caused by insufficient water sources or excessive rainfall in the areas where the plants are located seldom occur, we still establish contingency measures for water resources dispatch for drought periods. We actively carry out water resources standardization and management through the tracking of regime lights. The emergency response water dispatch team is in charge of water trucks, water tanks, water sources, and other matters regarding water resources dispatching, to ensure uninterrupted operations.

In 2020, the percentage of water resources used in Unimicron’s Taiwan Facilities was about 73.3%, while use amounted to 5.2% for the plants in South China and 21.5% for the 4 plants in East China. The total water consumption in 2020 was 20,564,217 m3. The rainwater ratio was extremely low at 0.02%, whereas the total percentage of water consumption from wells and tap water accounted for 25% and 75%, respectively. The average amount of well water used in the past 5 years is about 5.72 million m3 and the average amount of tap water used in the past five years has been maintained at about 13.5 million m3. In 2020, the use of recovered rainwater was about 4,122 m3, which was used to water green areas in substitution of tap water. We hope to save and allocate water by means of rainwater storage and utilization. From the perspective of the total water use intensity per unit of revenue, the trend has been decreasing year by year over the past 5 years. It decreased by 4% in 2020 compared with 2019 and 10% over the past five years. The improvement in water efficiency is significant.

Water Consumption and Intensity

Under climate change, climatic characteristics such as temperature and rainfall will change. In addition to increasing temperature, rainfall will also be unevenly distributed in time and space. For example, the increase in rainfall during the high-water period and the decrease in the rainfall during the low-water period have led to a larger monthly difference in river flow, which may further lead to an imbalance in the water supply and demand system. Unimicron continuously improves water-saving technology to increase water efficiency and rainwater recovery storage tanks are installed in each plant to reduce consumption of water resources. In addition, we continuously add water-recycling systems to reduce consumption of water resources by recycling low-polluting water sources produced in various processes and treating them to replace water used for industrial production. The recycling rate of water resources in 2020 was 23% (4,708,998 cubic meters), and the average recycling rate in the past five years was 17%.

Water Resource Recovery Ratio

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