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NHK Spring Group’s CO2 Reduction Activities

We uphold reduction targets for energy use and CO2 emissions as we engage in global environmental conservation activities. As a member of the Japan Auto Parts Industries Association (JAPIA), we have largely achieved JAPIA unit CO2 emissions index to sales*1 targets as a result of the CO2 reduction activities implemented in association with our overall Group.

NHK Spring Initiatives

During fiscal 2019, NHK Spring’s CO2 reduction efforts outperformed the JAPIA fiscal 2019 target of a 12% reduction from fiscal 2007 levels, achieving a relative reduction of 24.9%. We achieved twice the targeted reduction. We also achieved major CO2 reductions in comparison to JAPIA performance of 16% reduction (fiscal 2018).

FY2019 unit emissions index performance (NHK Spring)

*1. Unit emissions index: Figures relative to those for JAPIA base year fiscal 2007,with index reference value set to 100.

●Transition in unit CO2 emissions index (NHK Spring)

*Electric CO2 emissions coefficient = 0.368 tons/1,000 kWh

Domestic Group company initiatives

During fiscal 2019, the CO2 reduction efforts of our domestic Group companies outperformed the JAPIA fiscal 2019 target of a 12% reduction from fiscal 2007 levels, achieving a relative reduction of 21.2%. We thus greatly outperformed both the JAPIA reduction target, as well as actual JAPIA performance of a 16% relative reduction (in fiscal 2018).

FY2019 unit emissions index of performance
(domestic Group companies)

*1. Unit emissions index: Figures relative to those for JAPIA base year fiscal 2007,with index reference value set to 100.

●Transition in unit CO2 emissions index (domestic Group companies)

*Electric CO2 emissions coefficient = 0.368 tons/1,000 kWh

Overseas Group company initiatives

CO2 emission volumes at overseas Group companies trended upward in line with increases in production volumes. Unit emissions index performance during fiscal 2019 was down 25.9% compared to fiscal 2009, when statistical aggregation began.

While considering the circumstances present in each country, we are actively pursuing action to deploy management and technologies that have produced results in Japan.


FY2019 unit emissions index performance (overseas Group companies)

*1. Unit emissions index: Fiscal 2009 index reference value set to 100.

●Transition in unit CO2 emissions index
(overseas Group companies)

*Electric CO2 emissions coefficient = 0.368 tons/1,000 kWh

Sharing of existing countermeasures technology and new technology development (CO2 Reduction Activity Awards)

Our work to further CO2 reductions includes not only existing countermeasures technology, but also development of new countermeasures technology. In order to share these technologies Groupwide, we hold annual CO2 Reduction Activity Awards. Business sites compete with each other on countermeasures technology, and effective countermeasures technologies are shared throughout the Group. To work for global environmental conservation moving forward, we will engage in vigorous exchanges of views throughout the entire Group as we do our utmost to take CO2 reduction action on a continuous basis.

Suspension Spring Division ―CO2 Reduction Through Adoption of Electric Servomechanisms in Hydraulic Fatigue Testing Machines―

Joint development of a fatigue tester with test equipment manufacturer (KOKUSAI CO., LTD.). Major CO2 consumption reductions (270 tons/year) were achieved by replacing the hydraulic unit to a low-power-consumption electric servomechanism design (received the President’s Award for 2017).

Electric servomechanism fatigue testing machine

Electric servomechanism fatigue testing machine

DDS Komagane Plant ―Air Consumption Volume Reduction Through Production Facilities Improvement―

Large volumes of air are used when products are held in place by vacuum chuck. By making precision improvements in facilities operations, vacuum clutching times were shortened, thereby reducing air consumption volumes. Reducing air volume consumption eased the air compressor load, leading to reduced CO2 emission (received the President’s Award for 2018).

●Award-winning actions, technologies of the past five years

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