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Green Production

Reducing the Impact of Products and Services on the Environment

According to a survey conducted by the International Energy Agency (IEA), about 20-30% of global oil is used for transportation. When the vehicle is moving, the energy consumption from the rolling resistance of tires would reach 20~30% of the total energy consumption. Therefore, tire rolling resistance is also one of the key factors affecting the energy consumption of vehicles.

When the vehicle is running, the vehicle power will be transmitted to the tires, and the energy loss generated by the tires to the road can be referred to as rolling resistance. The rolling resistance coefficient is measured in the laboratory for the ratio of the rolling resistance of the tire to the static force of a tire. If the rolling resistance coefficient is low, the fuel consumption of the vehicle on the tire will also be low and cause the reduction on the use of energy.

The Company is committed to the development of energy-saving and eco-friendly tires and has developed an advanced computer simulation and analysis system - KETK to design an optimized tire outline to effectively reduce the use of raw materials and achieve the goal of light weight and lower rolling resistance.

With the advanced computer simulation analysis system - KETK, the Company launched the new generation of eco-friendly and energy-saving tire KR201X in 2019. KR201X features low rolling resistance, low noise, high wet grip and high wear resistance. In addition, the computer analysis can optimize the ground pressure and structure of the tire to enhance the tire’s service life.

In order to meet the increasingly stringent requirements of international regulations, it is continuously improved to achieve the purpose of reducing rolling resistance. In 2019, a new silane was introduced to help couple silica with the rubber and is expected to reduce the rolling resistance by 5%. However, in order to maintain the safety performance of the tires, the formula was adjusted so that the rolling resistance reduction did not reach the standard; however, it still met the requirements of the European Union wet grip/rolling resistance class C or higher. Although the rolling resistance coefficient was reduced from 7.23 in 2019 to 6.76 in 2020 (6.5% reduction) through the lightweighting of tires and the optimization of grounding pressure, it did not achieve the target of 6.0 or below in 2020. In 2021, the Company introduced a new type of SSBR rubber with low temperature characteristics and a high amount of grip material (Resin) to continue to develop a wider range of applications and maintain the original energy saving and safety requirements. The rolling resistance coefficient was 6.1 in 2021, 9.8% lower than 6.76 in 2020. In 2022, we will achieve the target of 6.0 by means of low rolling resistance of the overall rubber of the tire.

In order to assist consumers in every country to choose the right products, the Company complies with the laws and regulations on product labeling in every country. In order to effectively manage products to meet local laws and regulations, the Company uses a project management system for checking that the Company applies for all certifications required by regulations in each sales territory before product development. The Company obtained 100% of the certifications that the Company applied for the period from 2019 to 2021.

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