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000713This report is printed on recycled paper authorized by the ecomark.
We are using 100% recycled paper made totally from used paper in order to protect the forest resources.
This is printed with soy ink in consideration for the global environment.

Greetings
It is the wish of everyone that the earth we live in has plentiful green and is of agood environment forever.
However, the various activities of us mankind produce an evil effect on ourirreplaceable earth in various ways transcending the natural cleansing ability.
Environmental problems on a world scale such as global warming has posed
great anxiety for the future of mankind.
It is our urgent task to recover the severe situation of the global environment
and to live in symbiosis with the environment, but for this, the government,
local government and corporation as well as individuals must renew the way of
thinking and act with emphasis on the value of the environment.
There have been many measures taken already in various fields, and fruits inaccordance with the endeavors have resulted. Society has been moving toward

CONTENTS

the greater direction of environmental preservation.

Greetings

1

Corporate Philosophy・Corporate Outline

2

Basic Philosophy for the Environment3

As a company, which will protect the global environment and live in symbiosis
with society, NGK Spark Plug Co., Ltd. aims to create new values through all
our corporate activities such as the development of products, manufacture, sales

Outline of corporate activities for the whole company

4and providing services. To achieve this goal, we have compiled the Declaration

Reduction of the Burden on the Environment

6

for Environment, and have engaged in enthusiastic environmental preservation

Energy saving

8

measures such as

Aiming for zero emission

10

promotion of energy saving and reduction of the use of harmful substances,

Development of products kind to the environment

12

Environmental education and enlightenment activities

14

Environmental data according to each factory

15

List of Offices

16

reduction of waste and promotion of recycling,based on our Environment Guideline
environmental preservation activities.

which forms the basis of ourAt the same time, we have progressed with building the Environmental
Management System, and have obtained authorization of the International
Environmental Standard ISO14001 for our Head office & Factory and theaffiliated companies, NGK Spark Plug Industries Europe S.A. France and NGK
Spark Plug MFG.(U.S.A.), Inc. We intend to expand the authorization to ourremaining factories in Japan and abroad.
Through these activities, we will make every effort to preserve the environment,
and we would like to report our environmental preservation activities and thefruits in fiscal year 1999 in our Eco Report.
It will be our greatest pleasure if our philosophy and activities regarding
environmental preservation will be understood, and we ask you for youropinions and guidance.

Shigenobu Kanagawa, President
July 2000

1

Basic Philosophy for the Environment

NGK Spark Plug Co., Ltd.
Declaration for the Environment

Corporate philosophy
Three elements constitute our corporate philosophy

Our company aims to create new values through all our corporate activities such as the development, manufactureand sales of NGK spark plugs/ NTK new ceramics products as a company protecting the global environment andliving in symbiosis with society.
In order to achieve this goal, we have compiled an environmental action schedule based on our environment
policy and will promote management that can be continuously developed and corporate constant recognition of
the preservation of the environment.

Management Policy

Action Guideline

We offer a working environment inwhich each one of us is encouragedEver onward !
Always mindful of what is the best

to make full use of his or her

course, we swiftly put it into action.

personality and capability.With all
our power we are dedicated topursue management based ontrust and confidence.

Commitment
With full use of the most suitable
technology and our accumulated
experience,we continue striving tooffer new values to the peoples of theworld.

SloganWith established trust and confidence insideand outside the company, we aim to contribute to the peoples of the world
by creating and putting at their disposal new values for the future

Environment policy
1. To accurately grasp the effect of corporate activity on the environment, set an environmental objectives andtargets. These should be reconsidered regularly for a continual improvement of the Environmental
Management System (EMS) and performance for environmental preservation.
2. We will abide by laws, regulations, agreements and other demands we have agreed to concerning
environmental preservation.
3. Priorities in environmental measuresa. We will endeavor to prevent pollution in the air, soil and the water.
b. We will promote energy saving.
c. In order to use resources efficiently, we will promote the reduction of waste and recycling
d.We will endeavor to design and develop products with concern for the environment.
e. We will have high concern for the environment of the local community.
4. In order to achieve this environment policy, we will make sure our employees know of this policy, and conduct
environmental education as well as publicity to improve the level of recognition among our employees forenvironmental preservation. We will also ask related companies for their understanding and cooperation, as
well as disclosing information outside the company.

Environmental action schedule
We have compiled the following schedule based on the environment policy. (partly amended on April 1, 2000)

Item

Corporate Outline
As of May 31,2000

Name of company

NGK Spark Plug Co., Ltd.

Head Office

14-18, Takatsuji-cho, Mizuho-ku, Nagoya, Aichi Pref.

Founded

October 26, 1936

Capital￥37 billion 57.3 million

Business:（1）Manufacturing and selling spark plugs and related
products for internal-combustion engines.
（2）Manufacturing and selling new ceramics andapplicable praducts.
Number of Employees

2

5,256
Head office & Factory
Komaki Factory
Kagoshima-Miyanojo Factory
Ise Factory
Others

984
2,741
534
416
581

Action schedule

Building an environmental
management system

EMS based on ISO14001 will be founded and employed for the whole company.
The Komaki, Ise and Miyanoshiro Factories will obtain authorization by the end of 2000.
EMS will be built for related companies including our offices abroad by the year 2005.

Prevention of pollution in the air,soil and water

We will promote control of harmful substances to the environment, and reduce its use.
We will build a system to control dangerous and harmful substances and promote employee education.
We will totally abolish the use of chlorinated organic solvents by the end of the fiscal year 2002.

Promoting energy saving

We will prevent global warming by reducing the total exhaust quantity of CO2.
We will reduce the energy used per unit by 6%, as compared with the fiscal year1999, by the end of the
fiscal year 2005.

Reduction of waste andpromoting recycling

We will promote reduction and recycling of industrial waste and aim for zero emission.
We will reduce 70%, as compared with the fiscal year1999, of our combustion and burial quantities by
the end of the fiscal year 2005.
We will promote technology development, which will contribute to environmental preservation with

Product development withconsideration for the burden on the environment in our product design and development.
We will promote expansion of environment related products.
consideration for the environment

We will build and employ an environment evaluation system in product design and development.

Consideration for the environmentof the local community

As a member of the local community, we will endeavor to build a relationship in symbiosis with society,through our environmental preservation activities.
We will promote cleaning activities in the vicinity of the factories.
We will promote the greenery expansion in our compounds.
We will enthusiastically participate in the local environmental preservation activities.

3

Outline of corporate activities for the whole company

Environmental Management System
The Environmental Management System (EMS) is a management system to continuously reduce theburden imposed on the environment through corporate activities such as obtaining raw materials, in the
manufacturing process, use of products and waste of products. At our company, we have adopted theISO14001 standard for the environmental management system.

Organization for the Environment
At our company, we are promoting the reduction of the burden on
the environment with the organization indicated to the right. Eachspecial committee has been founded for a set theme such asindustrial waste, chemical substances and obtaining greenery.

Board of Directors

Obtaining the ISO14001

Environment & Safety Management Dept

Komaki Energy Saving
Special Committee
Komaki Environment
Committee

ChairmanPresident

Head OfficeEnvironment Committee
Various Specialized Committees atthe Head OfficeEnvironmental manager

In August 1999, our corporate activities with consideration for the environment were acknowledged, andour Head office ＆ Factory obtained authorization of the ISO14001. In order to develop further as acorporation, which is kind to the environment, we are aiming to obtain authorization for the Komaki,
Kagoshima-Miyanojo and Ise Factories by December 2000. Our company intends to realize a more
efficient EMS by our intentions to compile a policy and manual for the whole company. For our relatedcompanies abroad, NGK Spark Plug MFG.(U.S.A.), Inc. and NGK Spark Plug Industries Europe S.A. has
obtained authorization in May 2000 one after the other.

Energy Saving Special Committee
at the Head Office

Person responsible forthe environment

Komaki Various
Specialized Committees

Central Environment
Committee

Miyanojo Energy Saving
Special Committee

Board ofManaging Directors

Miyanojo Environment
Committee
Central Energy Saving
Special Committee

Miyanojo Various
Specialized Committees

Ise Energy Saving Special
Committee
Ise Environment
Committee

Environment Cost

Head office & Factory

Kagoshima-Miyanojo Factory

NGK Spark Plug MFG.(U.S.A.), Inc.

Komaki Factory

Ise Factory

NGK Spark Plug Industries Europe S.A.

What is the ISO14001?
ISO stands for International Organization for Standardization. ISO is a private organization,
but its standards have been adopted in many countries with tremendous authority. Standards
are set for various fields, and the 9000 series for quality control and the 14000 series
concerning the environment are well known in Japan. The 14001, which we obtained after

Various Specialized
Central Committees

At our company, we have endeavored to build a system ofenvironmental accounting based on the Guideline publicized by
the Environment Agency, in March 1999, Concerning the
Grasping and Announcement of Environmental Preservation costs(interim compilation), but we regret that we have not reached thestage where we can accurately announce our environmental
preservation costs. In the future, we will continue to consider theframework presented in the year 2000 edition of the Guideline for
the Adoption of the Environmental Accounting System, and direct
our efforts at an early foundation of the “Approach toEnvironmental Accounting and Calculation System, Taking inConsideration the Perspective of the Effects.”
In this report, we have followed the classification of the 1999
Environment Agency Guideline (interim report) for announcing
what we regard as the environmental preservation cost for fiscal
year 1999, including some estimated figures.

Ise Various Specialized Committees（Unit: million yen）
1. Costs necessary for direct reduction of the burden on theenvironment

2,098

2. Costs necessary for the indirect reduction of theburden on the environment

222

3. Costs necessary for the reduction of the burden on theenvironment to do with the use and disposal of
products manufactured and sold.

10

4. Costs necessary for research and development for (Note)
reduction of the burden on the environment
5. Costs necessary for social measures for reduction of theburden on the environment84

6. Other costs related to environmental preservation

13

Total

2,427

(Note)The research and development costs for the reduction of the burden on theenvironment in 4 are not yet defined clearly, so we have not listed them this year.

Obtaining greenery
Obtaining greenery is to promote environmental preservation when we purchase products and services and obtain raw
materials by
1. always purchase with sufficient consideration for necessity
2. purchase things that have the minimum burden on the environment with priority
3. purchase things from corporations, which are kind to the environment with priority.

the authorization by the 9000 series, is a standardization of the environmental management
system.

4

At our company, office supplies and daily goods have been subject to purchasing greenery in our activities. In the future, we will
begin this measure for our parts and raw materials, and will expand obtaining greenery. In the fiscal year 1999, the greeneryobtaining rate was 40% for office supplies and daily use goods.
5Reduction of the Burden on the Environment

We will endeavor to reduce the use of substances
posing a burden on the environment to prevent
pollution in the air, soil and water.
Regulating the use and emission of substances that pollute the air, soil and water and reducing the burden on the
global environment is a precondition for continuing our corporate activities. At our company, we are fullycommitted to the promotion of control and reduction of substances posing a burden on the environment such as
fully abolishing the use of chlorinated organic solvents, which were formerly used for washing parts.

Achievements in environmental preservation
In order to reduce the burden on the environment, we are measuring and checking data of the air, water, noiseand ground water for each factory. Our achievements in the fiscal year 1999 were within the standards for each ofour Head office ＆ Factory, Komaki, Kagoshima-Miyanojo and Ise Factories, and posed no problems. However,pollution and environment related laws are stricter year by year, and new laws are being enforced. In the future,
further reduction of the burden on the environment is necessary. (Environment data for each factory is listed on
page 15).

Building a control system for dangerous and harmful
PRTR Law (The Law for the Grasping and Promoting the Improvement of the Emission to the Environment ofSpecified Chemical Substances ) has been enforced since April 2000. In accordance with this enforcement, we are
faced with more demand to reduce the use of chemical substances harmful to human health and polluting theenvironment, and switch over to safe substances. 27 chemical substances we handle in our factories such as leadcompounds and hexachrome are subject to this regulation (as of our survey conducted in January 2000), and weare progressing with the building of a system to reduce and sufficiently control these substances.

Reduction of SOx
Sulfuric oxide(SOx) is emitted in the air as sulfurous acid gas when the sulfur in the fossil fuel such as
petroleum is combusted, and is the cause of acid rain.
At our company, in order to reduce SOx emission, we are promoting a switch over from crude petroleum tonatural gas for fuel used for combustion furnaces and boilers to impose less of a burden on theenvironment.

Reduction of the Burden on the Environment

Protection of the Ozone Layer
At our company, we have fully abolished the use of specific flon and 1.1.1trichloroethane, which destroy the ozone layer from our manufacturing stages
and have substituted them with other substances. We are promoting the switch
over from flon to other substances for our air-conditioning when we renew our
air-conditioning facilities.

Measures for dioxin
Dioxin arises mainly from combustion of industrial waste. When a man intakes
more than the allowable quantity, it is harmful to the human body as a
carcinogen and as a hormone disrupting substance.
At our Head office ＆ Factory, we have begun by abolishing the combustion
facility regulated by the law in 1994 for our dioxin measures, and have also
entirely abolished them in our 4 factories and 18 related companies by February
2000.

Treatment exhaust gas facility(Ise Factory)

Full abolishment of chlorinatedorganic solvents
We will be abolishing this substance which was used to wash parts by the endof the fiscal year 2002, by switching over to a substitute substance. We aim to
fully abolish it at the Head office ＆ Factory by March 2002, the Komaki
Factory in September 2000, Kagoshima-Miyanojo Factory in September 2001,
and the Ise Factory in September 2001.

Treatment drainage facility (Komaki Factory)■Quantity used
■Transition of the quantity of SOx emitted(Nm3/year)（Note）

1600
1400
1200

1304

1000

775

800
600

521

400

282

280

1998

1999

200
0
fiscal year

1995

1996

1997

0

6

20

40

60

80

100

120 (ton)(Note)The value for tha fiscal year 2000 is estimatedvalue based on our reduction plane.

7

Energy saving

Energy Saving in the Manufacturing Facilities

We will endeavor to reduce the quantity ofenergy used to preserve the global environment
In order to reduce the quantity of CO2 emitted, which is the cause of global warming, we need to use energy
such as electricity and gas efficiently. Fossil fuel, the source of energy, can dry out in the future. We will
endeavor to reduce the quantity of energy (original unit) used by reconsidering the stages and thoroughenergy saving activities within the company.

Energy saving

We are conducting voluntary energy saving activities in each department bymeans of educating our employees concerning the machine facilities.
One measure is the setting of the energy control standard. This enables us toreconsider meaningless energy consumption and reduction.

●Examples of energy saving measures conducted in the fiscal year 1999.
・ Rationalization of factory compressed air pressure (766,000 kwh/year)
・ Energy saving by means of improvement in the manufacturing process such as achange in the combustion conditions of the furnace (278,684 kwh/year)
・ Energy saving by turning the lights off in the automatic vending machines (156,000
kwh/year)・ Stopping the receiving substation transformer at the time of low load (138,000
kwh/year)・ Reconsideration of the capacity of the pump motor to take ground water (14,600kwh/h)
・ Adoption of high-efficiency lighting equipment (7,000 kwh/year)
・ Stopping the auxiliary equipment of manufacturing facilities when not
manufacturing

Reduction of the quantity of energy used
We are reducing the quantity of energy used in all the energy consuming
facilities such as manufacturing facilities, related machinery, and airconditioning and lighting equipment used in our departments. In order toproceed with our measures efficiently, our company has established the Energy
Saving Special Committee, which considers, plans and confirms the effects ofmatters related to energy saving.

●Energy saving activities by the Energy Saving Special Committee
・ Holding the Energy Saving Special Committee(the Central Committee twice a year and the Local Committee 4 times a year)
・Control of Progress in the fiscal plan
・Energy saving patrol by the special committee members
・Emulation and development of good and efficient cases
・Support for energy saving activities in each department
・ Providing information and enlightenment activities concerning energy saving
・ Choosing a temperature control manager for every air-conditioning facility forpromotion of in-door temperature control
・Reduction activity of electricity used by OA facilities, which are standing by in each
office■ Quantity of energy reduction
by energy saving measures in four factories
Petroleum calculated quantity（K ）
2,000

1,578

1,543

1,500

1,000

500

244

0
fiscal year 1998

1999

2000

(Note)
1 The quantity of energy reduced is calculated
for 12 months per year according to theenergy saving measure.
2 The value for the fiscal year 2000 is thetarget value based on the energy saving
plan.

Energy saving in each factory
At our company, we are setting the target energy consumption quantity foreach fiscal year based on the company energy original unit reduction target andcontrolling the energy consumed.
■Energy saving rate in the fiscal year 1999 for each factory
Petroleum calculated quantity（Ｋ ）Rate of energy saving（％）

80,000

4.0■Quantity of energy used (original unit) and sales

Energy consumption
Rate of energy saving

Sales(million yen)

Original unit

250,000

1.0

60,000

3.0

Sales
Original unit

(note)
1 The original unit is the petroleum energy (kl)used per 1 million yen value added
manufacturing quantity.
Value added manufacturing quantity is theactual manufactured quantity in the company
calculated by subtracting the processingordered outside of the company from sales.
2 The quantity of energy used is measured withthe (kl) value in petroleum of the quantity ofelectricity and fuel used.
3 The sales value for the fiscal year 2000 is an
estimate and the original unit is the target
value.

8

200,000

2.5％
2.0％

0.8

2.1％

40,000150,000

2.0

1.4％

0.6

1.5％

20,000100,000

0.4

50,0000.2

00 fiscal year

1998

1999

2000

1.0

Total

Head office＆Factory Komaki Factory Kagoshima-Miyanojo
Factory

Ise Factory0(Note) Rate of energy saving (%) =(quantity of saved energy calculated interms of crude petroleum / energy used
calculated in terms of crude petroleum)
x100

0

9

Aiming for zero emission

Establishing a recycling center

We will promote recycling for effective useof resources.
We are required today to reduce industrial waste and promote recycling in order to effectively use ourlimited resources. In our company, we have fully abolished the combustion furnaces subject to regulations
in our factories and related companies, based on the Dioxins Measures Special Regulation Law. We arerecycling used paper, which has the highest proportion in our combustible waste, as much as possible.
Waste to be buried has been thoroughly separated and recycled to reduce its volume, to achieve our targetof a cyclical zero emission.

The recycling center is an in-house “Comprehensive Waste Center” and isliterally established in the center of each factory. We wanted to change our “justwaste” to “a mountain of treasures,” so we secured a first rate site for thebuilding. In the interior, we have distributed the volume reduction machine,
measuring machine and reparation chart with containers for each classification.
The workers in charge are constantly on duty to communicate with the waste
disposal personnel concerning “separation, measurement and bearing thedisposal fee” in order to experience by themselves, the fact that “waste is the
responsibility of the person who produces the waste” which has been stipulated
by law.

Aiming for zero emission

Head Office Recycling center

The present situation of waste and reduction plan
Our company produced 1,350 tons of waste per month in the fiscal year 1999. Among this, we recycled a
total of 74% in raw materials waste, oil waste and paper waste. We passed the 80% mark target for 1999 in
all our factories in the recycling rate of used paper. However, we are presently burying 26% (350 tons) of
our waste, and we intend to reduce this by 70% as compared with the fiscal year 1999, by the end of the
fiscal year 2005 aiming for zero emission. In our Head office & Factory taking the initiative, buried waste
has been already reduced due to reduction of plastic waste and recycling.
Ise Recycling center

Miyanojo Recycling center

Komaki Recycling center■Target of corporation

Buried andcombusted waste
26.0％

Recycling rate 74.0％

Comparedwith 99
▲10％

76.5％

Comparedwith 99▲70％
Comparedwith 99▲25％
80.5％

Comparedwith 99
▲40％
84.5％

92.0％

Differentiation of industrial waste including paper waste
Recycling used paper

Total forthe whole company
1350tons per monthFiscal year 1999(achievement) Fiscal year 2000

Intermediary processing for raw materials

Recycling

Copying paper, magazines andsmall used paper
Fiscal year 2001 Fiscal year 2002

Styrene foam is returned to oil andpolyethylene terephthalate bottle and glass
bottles are cracked to pieces

Fiscal year 2005

Recycling industrial waste
Recycling

Recycling containers and wrapping
The Container and Wrapping Recycling Law was fully enforced in April 2000. When our product, thespark plug for automobiles is replaced by the user, the empty box becomes a domestic waste, and therecycling entrusting fee has been calculated based on the obligatory quantity, with a payment contract.
Under this law, grasping of the materials used for containers and wrapping is obligatory (grasping inaccounting books) and our company has engaged in:
1. switching to returnable containers,
2. lighter and smaller containers, and3. switching over to materials with consideration to the environment,in order to stop the drying out of resources and increase of industrial waste.

10

Styrene foam and polyethylene
terephthalate bottle and glass bottles

Thorough differentiation ofwaste in each officeCombustible waste

Combustion furnace of waste
General waste

Recycling center
Buried waste

Burying location
Industrial waste

11Development of products kind to the environment

Communication media related area

We will progress with products kind to theenvironment in order to contribute to thepreservation of the environment.
Our company has constantly presented products, which contribute to energy and resource saving andreduction of emitted gas in the automobile, information communication and general industries. We
consider it our great corporate responsibility to contribute to environmental preservation through our
products. In the future we will expand our line of products which are kind to the environment and build asystem of environmental evaluation in each stage of design and development.
The NGK Spark Plug and the NTK Sensor have been playing
important roles in the development of the automobile industry. The
spark plug can draw out the full performance of the engine and reduce
the fuel consumption, thus contributing to energy saving andreduction of emission gas. The sensor detects the temperature,
combustion and emission to control the automobile in its mostappropriate condition contributing to reduction of emitted gas andglobal warming measures. In the future, we would like to expand anddevelop our line of products, which are kind to the environment.

Automobile related area

Igniter plug for rocket

Iridium IX plug
V-grooved center electrode plug

Environmental Protection
Stricter Emission Regulation,
Use of Heavy Gasoline, and OBD-II Compliance■Social trends■Vehicle trends

Conservation of Oil Resources
Enforcement of Fuel Economy Regulation
and Alternative Sources of Fuel

Direct injection
Gasoline Engines

Reduction of Fuel
Consumption

LEV/ULEV■Plug requirements

CNG Auto mobiles

Low Spark Discharge
Voltage

Improved Ignitability

Improving Costomer Satisfaction

Higher Output

Ceramic filter
Dielectric filter

Dielectric resonator

PGA
Organic package

Ceramics related area
We provide ceramic products to various industries with the characteristics ofheat resistance, abrasion resistance, electric insulation and functionality. We arealso developing environment equipment including temperature and humidity
detection apparatus and ozonizers.

Maintenance-free
Cars

Diesel Engine

More Durable Ground
Electrodes

Demands for our electric parts are increasing all the more in the Information
Technology Era. Meeting the needs for compactness, higher density and speed
on various electronic appliances and communication media components, we arealso conscious of the effects to the environment. We take energy saving and low
electricity consumption into consideration, whenever we design and develop
various IC packages for PCs, computers, mobile communication machines, andceramic filters and dielectric filters used for mobile phones.

Development of products,
kind to the environment

Increased Freedom in
Engine Design

Decreased Emissions

Improved Anti-fouling
PerformanceLong Life

Lightweight &Compact

Improved Startability

Spark Plugs for Direct
Injiction Engines

Copper-cored Ground
Electrode Spark Plugs

M12 HEX14 Small
Spark Plugs

HTC Glow plugs

Duct type temperature and humidity detector, Meteorological Hygrometer
These are temperature and humidity detectors using ceramic humidity sensor.
The duct style is used for the optimum control in general air-conditioning,
factory air-conditioning and dryers. The meteorological type is used for weather
observation.

■Plug solutions

Platinum Plugs with Multiple
Ground Electrodes

Iridium Plugs■Social trends

Petroleum Fuel
Alternatives■Sensor requirements■Sensor solutions

Reduction of Harmful Emissions
Enhanced Emission Regulations

More Stable Air/FuelControl

Feedback Control Equivalent
to Gasolinepowered
Automobile and Detection of
Catalyst Wear

Extra Long Reach
Spark Plugs

Detects Deterioration of NOx
Catalyst in Gasoline DI Engines
Detects NOx in Diesel Engines↓

Quick Startup of
Feedback Control

Thick Film Type Oxygen
Sensors
Oxygen Sensors for
CNG Engines

Fuel Economy

Detection of a Wide
Temperature Range

Highly Accurate andPrecise Measurement ofIntake Mass Air Flow

Reduction of Emissions
at Cold Start

NOx sensors

Ultra Fast Light-off
Oxygen Sensors

Small Diameter
Glow Plugs

Improved Safety andComfortCutting tools
Ceramic and Cermet cutting tools which have high hardness at hightemperatures are fit for the dry operation without using coolant. They prevent
environmental pollution by spattering coolant compared with former operation
with using coolant, and also reduce the consumption of electricity for oil
supplying equipment. They are used in various cutting tool fields.

Controls Automobile
Stability

Detection of
Combustion
Condition

Metal Film Type
Temperature Sensors

Micro Air Flow
Sensors

Silicon Rate
Gyroscopes

Ozonizer
This is a highly reliable ozone producer using alumina ceramics and high frequency and high - voltage power source. Using the antiseptic, deodorizing,bleaching effect of the high oxidation power of ozone, it is used in the field ofwater purification, air purification and deodorizing process.

Duct type temperature and humidity detector

Ozonizer

Knock sensor

Ignition Coils with
Combustion Sensors

Ceramic series

12

Exhaust gas oxygen sensor

13

Environmental education and enlightenment activities

Environmental data according to each factory

All our employees play the leading part ofglobal environmental preservation
In order to promote environmental preservation, it is indispensable for every employee to deepen
recognition and insight in the environment. At our company, we are continually providing environmental
education and improving the sense of the workers.

●Environmental data have been listed for the main control items in each factory. (The blankitems refer to raw materials not used in the respective factories.)●The regulated value listed is the strictest value among the related laws, ordinances, and thepollution prevention agreements with the local cities and districts.
■Head office & FactoryClassification

Air（mg/Nm3）

150

3.4

NOx

（ppm）

180

43

Training and education of inspectors(outside the company)

NOx

（ppm）

200

72
273

total quantity of SOx（Nm3/year）
pH

6.0〜8.0

7.2

SS（mg/R）

30

9BOD（mg/R）

600

49

BOD

（mg/R）

25

4.6

n-hexane（mg/R）

30

7.3

n-hexane（mg/R）

5

＜0.5

cyan

（mg/R）

1

＜0.1

cyan

（mg/R）

0.5＜0.1

total chromium（mg/R）

2

0.44

total chromium（mg/R）

1＜0.04

chromium compounds （mg/R）
Water （hexavalent）

0.5

0.28

chromium compounds （mg/R）
Water （hexavalent）

0.2

＜0.04

bronze（mg/R）

zinc（mg/R）

lead
nitrogenphosphorus

during the day

Air

NOx

0.14

0.1

＜0.02

lead

（mg/R）

0.1＜0.02（mg/R）

120

15

nitrogen（mg/R）

120

6.7（mg/R）

16

1.1

phosphorus（mg/R）

16

1.2

70

51〜59

Regulatedvalue

Measured
value

（dB）

colon bacillus（cell number/cm3）

70

53~60

Noise

during the day（dB）■Ise Factory
Regulatedvalue

Measuredvalue（mg/Nm3）

300

15

（ppm）

180

64

Classification

Item

particles of sootAir

（mg/Nm3）
（ppm）

NOx

total quantity of SOx（Nm3/year）

total quantity of SOx（Nm3/year）

6.0〜8.0

7.7pH

5.8〜8.6

7.7

SS（mg/R）

35

4

SS（mg/R）

90

＜1

BOD

（mg/R）

20

5BOD（mg/R）

25

6.0

n-hexane（mg/R）

5

2.5

n-hexane（mg/R）

cyan（mg/R）

1

0.05

cyan

（mg/R）

total chromium（mg/R）

total chromium（mg/R）

chromium compounds （mg/R）
Water （hexavalent）

0.05

3

0.05

bronze（mg/R）（mg/R）

5

0.05

zinc

（mg/R）（mg/R）

0.1

0.01

lead

（mg/R）（mg/R）

nitrogen（mg/R）

120

12.3（mg/R）

phosphorus（mg/R）

16

1.9

colon bacillus（cell number/cm ）

3000

0

60

45〜53

（mg/R）

zincleadnitrogenphosphorus

colon bacillus（cell number/cm ）during the day

chromium compounds （mg/R）
Water （hexavalent）

0.5

bronze

3

Noise

0.06

3

（mg/R）

Item

particles of soot1

（mg/R）

zinc■Kagoshima-Miyanojo FactoryClassification（mg/R）

1.2

colon bacillus（cell number/cm3）

Noisebronze5pH

Enlightenment activities

79

61

Education to maintain the a ability andtechniques of the inspectors

We have articles related to the environment in our monthly in-housegazette, “Nittoku” since July 1998. We are also providing informationsuch as environment related news and topics by using the intra-net within
the company for enlightenment activities.

200

7.3

Training for new employees

Training and education of inspectors (in-house)（mg/Nm3）

600

General education in the office

Education for public qualifications

Air

Measuredvalue

5.8〜8.6

General education

Specialized education

particles of soot7

Regulated
value

Item

（mg/R）

System of environmental education

Education for employees heavily engaged
in environmental affairs

Classification

SS

pH

In-house environment meeting

In-house environmental
inspection education

Measuredvalue

total quantity of SOx（Nm3/year）

Based on the environmental education and training standard, we are providing
general and specialized education and in-house environmental inspection
education.

Environmental educationand training standard

Regulated
value

Item

particles of sootPromotion of environmental education■Komaki Factory

（dB）

3000
65

3

0
45〜56

Noise

during the day（dB）

pH ：hydrogen ion concentration
SS ：concentration of suspended solid in water
BOD ：biochemical oxygen demand

14

15

Our company ecomark

List of Offices■Head Office&Factory
14-18, Takatsuji-cho, Mizuho-ku, Nagoya, Aichi Pref. 467-8525
General Administration Dept.
Phone 81・52・872・5915
F a x 81・52・872・5999

Automotive Components Group
Spark Plug Div.

■Komaki Factory
2808, Iwasaki, Komaki, Aichi Pref. 485-8510
General Administration Sec.
Phone 81・568・76・1211
F a x 81・568・76・1299

Automotive Components Group
Spark Plug Div.
Sensor Div.
Communication Media Components Group
Semiconductor Components Div.
Technical Ceramics Group
Cutting Tool Div.
Fine Ceramics Div.

■Kagoshima-Miyanojo Factory
2238-1, Tahara, Miyanojo-cho, Satsuma-gun, Kagoshima Pref.
895-1802
General Administration Sec.
Phone 81・996・53・2211

Our ecomark is a symbol of our environmental preservation
activities and is placed on documents, boards, posters etc. to dowith the environment, and is useful for our enlightenment
activities
We chose this ecomark from among the designs by our employees. It is
designed from the images of the earth, sun and greenery, together with theletters ECO.
ECO is a shortened form of ecology, and was originally a biology term. It isa study of the relationship between living organisms and the environment,
but today it has a broader meaning including environmental preservation
activities.

F a x 81・996・53・2215

Automotive Components Group
Spark Plug Div.

■Ise Factory
871-6, Hosokoshi, Enza-cho, Ise, Mie Pref. 516-1196
General Administration Sec.
Phone 81・596・39・1511
F a x 81・596・39・1554

Communicatin Media Components Group
Semiconductor Component Div.
Electronic Component Div.

The Eco Report has been compiled concerning theenvironmental preservation activities of NGK Spark PlugCo., Ltd. and the data listed are obtained before and during
fiscal year 1999.

For information contact
81・52・872・5915
General Administration Dept. Phone
F a x 81・52・872・5999
Public Relations Sec.

Environment & Safety Management Dept.
Phone 81・52・872・5980
F a x 81・52・872・5942

14-18, Takatsuji-cho, Mizuho-ku, Nagoya, Aichi Pref. 467-8525

16