Reduction of Environmental Impact Substances

Basic Approach

KOITO places the reduction of environmental impact substances as one of the most important environmental conservation activities. In the Environmental Policy, KOITO commits to strive to develop and establish new environmentally friendly technologies and products throughout the product life cycle and minimize the environmental impact and the use of resources and energy in the manufacturing process and work to reduce environmental impact substances.
 KOITO has set quantitative reduction targets for VOC emissions in the midterm priority activities. Activities are being implemented to reduce emissions while checking progress.
 KOITO is committed to an active role in reducing environmental impact substances to realize "Eco-friendly Manufacturing for People and the Earth."

Life Cycle Assessment (LCA)

KOITO is developing products with the goal of reducing environmental impact substances with a comprehensive viewpoint based on the life cycle covering R&D, production, transport, consumption, and disposal.

Efforts in Production Processes

Some raw materials, such as paints and chemicals, as well as secondary materials used in the production processes, contain chemical substances that have negative environmental impacts. KOITO is reducing these environmental impact substances by reinforcing the management of the amount to use and emit, improving consumption efficiency, and using alternative substances.
Management of Substances Regulated under the PRTR Act
KOITO is keeping track of the amount of substances regulated under the PRTR Act handled or transferred in the production processes while managing them appropriately as well as reducing the amount to use and replacing them with alternative substances.
 KOITO had seven substances, including toluene and styrene, which are subject to notification under the PRTR Act (type 1 specified substance) in FY 2019. The amount of these substances handled was 342.0 tons, and the amount transferred, including the amount emitted in the air and disposed of, was 114.7 tons in FY 2020.  
*PRTR Act: The law concerning the identification of the amount of specified chemical substances emitted into the environment and promotion of management.
Reduction of Volatile Organic Compounds (VOC)
KOITO has set a goal of reducing the amount of VOC emissions by 30% from the amount in FY 2001 by FY 2021, by keeping it in alignment with the Voluntary Environmental Action Plan of the Japan Auto Parts Industries Association.
 Our efforts resulted in a 75.6% reduction of the VOC emissions in FY 2020 compared to FY 2001. The VOC emissions per unit*1 was successfully reduced by 52.4% from FY 2009 when the reduction activities started.
 Meanwhile, KOITO has not used the three major hazardous air pollutants*2 since the company had eliminated the use of them in March 2003.
*1 VOC emissions per unit: The amount of VOC emissions (kg) per production in monetary amount (million yen)
*2 Hazardous air pollutants: Dichloromethane, trichloroethylene, and tetrachloroethylene