Supplementary Materials

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1 34 W Environmental Education Number of Publicly Certified Personnel and Internal Auditors According to business operation, we bring up employees with public qualification and technical knowledge. (people) NGK Spark Plug Affiliates Air 42 1 Pollution control manager Water Work environment measurement engineer 4 0 Environment measurement engineer 2 0 Energy manager 39 8 Specially controlled industrial waste manager Energy administrator 0 12 ISO14001 assistant examiners 2 0 ISO14001 Internal auditors (As of March 2011)

2 34 W Conditions for the Establishment of a System ISO Certified Sites Certification covering multiple units Country Certified initially in: Certification organization Head office/factory NGK Spark Plug Komaki, Miyanojo, Ise Takenami Nittoku Alfa Service Nittoku Unyu Sensor Japan NTK Komaki Nakatsugawa, Iijima, Kani JQA Nansei Kamioka Nittoku Seisakusho Head Office, Oguchi Satsuma Nichiwa Kiki Tono Tokai Taima Kogu Certification obtained individually Country Certified initially in: Certification organization U.S.A. NGK Spark Plugs (U.S.A.),Inc. WV TUV France NGK Spark Plugs (France) S.A.S AFAQ U.K. NGK Spark Plugs (UK) Ltd BSI Germany NGK Spark Plug Europe GmbH TUV Brazil a e Velas de Ignicao NGK do Brazil Ltda ABS QE Thailand Siam NGK Spark Plug Co.,Ltd TUV NORD South Korea Woojin Industry Co.,Ltd KFQ NTK Technical s Korea Co.,Ltd ISC Malaysia NGK Spark Plugs Malaysia Berhad SIRIM QAS China NGK Spark Plug (Shanghai) Co.,Ltd SGS Indonesia P.T. NGK Busi Indonesia Bureau Veritas India NGK Spark Plugs (India) Pvt.Ltd ASR South Africa NGK Spark Plugs SA (Pty) Ltd Bureau Veritas

3 35 W Compliance Status Data on Air, Water quality, noise and vibration We measure regularly the atmosphere, the water, the noise, the vibration, and manage them to observe laws and regulations. Head Office/ Item Type Unit Atmosphere (sewer) Soot and dust NOx Regulation value Low/Local regulation Agreement with the city Voluntary standard value Average MAX Boiler (No.12) mg/nm Firing furnace (PR-2) mg/nm Boiler (No.12) ppm Firing furnace (PR-2) ppm ph 5.0~ ~ SS mg/l BOD mg/l n-hexane extract mg/l Cyanogen mg/l Total chromium mg/l Hexavalent chromium mg/l <0.04 <0.04 Zinc mg/l Lead mg/l <0.02 <0.02 Nitrogen mg/l Phosphor mg/l Fluorine mg/l Boron mg/l 10-8 <1 <1 Morning R spot db T spot db *1 Daytime R spot db T spot db Evening R spot db T spot db *1 Night R spot db T spot db *1 Daytime R spot db T spot Night R spot db T spot *1 :These values apply to the background noise level. The background noise level is the noise when machines, and so on, are not operating. It is affected by traffic noise, noise fr om adjacent factories, and so on.

4 35 W Compliance Status Data on Air, Water quality, noise and vibration Komaki Item Type Unit Atmosphere (public water Soot and dust NOx SOx ph SS BOD COD Regulation value Low/Local regulation Agreement with the city Voluntary standard value Average MAX Boiler (No.1-5) mg/nm Firing furnace (No.9-10) mg/nm Boiler (No.1-5) ppm Firing furnace (No.9-10) ppm Boiler (No.1-5) Nm 3 /h <0.2 <0.2 Firing furnace (No.9-10) Nm 3 /h <2 < West 6.0~ ~ ~ North West mg/l North West mg/l North West mg/l North COD(total) Komaki total kg/day n-hexane extract Cyanogen Total chromium Copper Zinc Lead Nitrogen < West mg/l < North <0.5 <0.5 <0.1 <0.1 West mg/l <0.1 <0.1 North <0.1 <0.1 <0.04 <0.04 West mg/l <0.04 <0.04 North <0.04 < West mg/l North West mg/l North <0.02 <0.02 West mg/l <0.02 <0.02 North <0.02 < West mg/l North Nitrogen(total) Komaki total kg/day Phosphorus West mg/l North Phosphorus(total) Komaki total kg/day Nickel West mg/l <0.1 <0.1 North <0.1 <0.1 <0.1 <0.1 Manganese West mg/l 10-8 <0.1 <0.1 North <0.1 < Fluorine West mg/l North Boron West mg/l 10-8 <1 <1 North <1 <1 Morning Fifth spot db Daytime Fifth spot db Evening Fifth spot db Night Fifth spot db Daytime Fifth spot db Night Fifth spot db

5 35 W Compliance Status Data on Air, Water quality, noise and vibration Miyanojo Ise Item Type Unit Atmosphere Soot and dust NOx Regulation value Low/Local regulation Agreement with the city Voluntary standard value Average MAX Absorption heater/chiller mg/nm N/A N/A 3T water boiler mg/nm <0.006 <0.006 Absorption heater/chiller ppm N/A N/A 3T water boiler ppm ph 6.0~ ~ ~ SS mg/l BOD mg/l COD mg/l n-hexane extract mg/l <2.5 <2.5 Cyanogen mg/l <0.05 <0.05 Hexavalent chromium mg/l <0.05 <0.05 Copper mg/l <0.05 <0.05 Zinc mg/l <0.05 <0.05 Lead mg/l <0.01 <0.01 Fluorine mg/l < Boron mg/l Coli bacteria counts/cm Morning db Daytime db Evening db Night db Daytime db Night db Atmosphere Soot and dust Firing furnace mg/nm <5 <5 ph 5.8~ ~ SS mg/l BOD mg/l COD mg/l COD(total) kg/day n-hexane extract mg/l <1 <1 Total chromium mg/l 2-1 <0.04 <0.04 Copper mg/l <0.02 <0.02 Zinc mg/l Lead mg/l <0.01 <0.01 鉄 mg/l Phenols mg/l Nitrogen mg/l Nitrogen(total) kg/day Phosphorus mg/l Phosphorus(tota) kg/day Manganese mg/l Coli bacteria counts/cm Morning db Daytime db Evening db Night db Daytime (all directions) <50 <50 db Night (all directions) <50 <50

6 35 W Compliance Status Data on Air, Water quality, noise and vibration Takenami NTK (Iijima NTK (Nakatsugawa Item Type Unit Atmosphere Regulation value Low/Local regulation Agreement with the city Voluntary standard value Average ph 5.8~ ~ ~ SS mg/l BOD mg/l COD mg/l n-hexane extract mg/l 5-4 <0.5 <0.5 Nitrogen mg/l Phosphorus mg/l Coli bacteria counts/cm Morning Fourth spot db Daytime Fourth spot db Evening Fourth spot db Night Fourth spot db Daytime Fourth spot db Night Fourth spot db Firing furnace: YA-5,6 <5 < Soot and Firing furnace: YA-7,8 - <5 mg/nm 3 dust Absorption heater/chiller: FGL <5 < Absorption heater/chiller: FGDL - <5 NOx Firing furnace: YA-5,6 <10 < Firing furnace: YA-7,8 - <10 ppm Absorption heater/chiller: FGL Absorption heater/chiller: FGDL ph 5.8~ ~ ~ SS mg/l BOD mg/l COD mg/l n-hexane extract mg/l <1 <1 Cyanogen mg/l <0.01 <0.01 Copper mg/l Zinc mg/l <0.05 <0.05 Lead mg/l <0.05 <0.05 Fluorine mg/l Boron mg/l Phenols mg/l <0.02 <0.02 Ammonia mg/l Coli bacteria counts/cm Morning First spot db Daytime First spot db Evening First spot db Night First spot db Atmosphere Soot and dust Firing furnace(nn-1) mg/nm SOx Firing furnace(nn-1) Nm 3 /h ph ~ ~ ~ SS mg/l BOD mg/l COD n-hexane extract Nitrogen Phosphorus Coli bacteria MAX mg/l <0.5 <0.5 mg/l <0.5 < mg/l mg/l counts/cm Morning Fourth spot db Daytime Fourth spot db Evening Fourth spot db Night Fourth spot db Daytime Fourth spot db Night Fourth spot db

7 35 W Compliance Status Data on Air, Water quality, noise and vibration NTK (Kani Nansei Kamioka Nittoku Seisakusho (Head Office Item Type Unit Regulation value Low/Local regulation Agreement with the city Voluntary standard value Average Atmosphere Soot and dust mg/nm NOx ppm (sewer) (sewer) ph 5.8~ ~ SS mg/l BOD mg/l COD mg/l n-hexane extract mg/l Morning First spot db Daytime First spot db Evening First spot db Night First spot db ph ~ SS mg/l BOD mg/l <1 <1 COD mg/l <1 <1 n-hexane extract mg/l <1 <1 Lead mg/l <0.01 <0.01 Nitrogen mg/l Phosphorus mg/l <0.05 <0.05 Coli bacteria counts/cm Morning North db Daytime North db Evening North db Night North db ph 2 5.8~ ~ SS 2 mg/l BOD COD n-hexane extract Coli bacteria MAX 2 mg/l mg/l <0.5 <0.5 2 mg/l <0.5 < <30 <30 2 mg/l <30 <30 Morning Fourth spot db Daytime Fourth spot db Evening Fourth spot db Night Fourth spot db Office building ph 2 Head factory 5.0 以上 - 5.8~ West factory Office building 1 1 SS 2 Head factory mg/l West factory Office building BOD 2 Head factory mg/l West factory Office building - - n-hexane 2 Head factory mg/l <0.5 <0.5 extract 3 West factory Morning Second spot db *1 Daytime Second spot db Evening Second spot db Daytime Second spot db <45 <45 Night Second spot db <45 <45 *1 :These values apply to the background noise level. The background noise level is the noise when machines, and so on, are not operating. It is affected by traffic noise, noise fr om adjacent factories, and so on.

8 35 W Compliance Status Data on Air, Water quality, noise and vibration Nittoku Seisakusho (Oguchi Nittoku Seisakusho (Satsuma Nichiwa Kiki Tono Sensor Tokai Taima Kogu Item Type Unit (sewer) ph SS BOD n-hexane extract Regulation value Low/Local regulation Agreement with the city Voluntary standard value Average MAX Oguchi ~ ~8.4 Oguchi Oguchi mg/l Oguchi Oguchi mg/l Oguchi Oguchi mg/l 5-5 Oguchi Morning First spot db Daytime First spot db Evening First spot db Night First spot db Daytime First spot db Night First spot db ph 5.8~ ~ SS mg/l BOD mg/l n-hexane extract mg/l Coli bacteria counts/cm Morning First spot db Daytime First spot db Evening First spot db Night First spot db Daytime First spot db Night First spot db ph 5.0~ - 6.0~ n-hexane extract mg/l Daytime Cooling tower north side db Atmosphere Soot and dust mg/nm3 NOx ppm ph ~ SS mg/l BOD mg/l n-hexane extract mg/l Morning db Daytime db Evening db Night db Atmosphere Soot and dust mg/nm NOx ppm ph 6.0~ ~ ~ SS mg/l BOD mg/l COD mg/l n-hexane extract mg/l Nitrogen mg/l Phosphorus mg/l Fluorine mg/l Boron mg/l Daytime db Night db Morning east db Daytime east db Evening east db Night east db Daytime east db Night east db

9 36 W Environmental Accounting Environment Preservation Costs Costs within the business area Classification Pollution prevention cost Global environmental conservation cost Resource circulation cost Upstream & downstream cost Management activity cost R&D cost Social activity cost (Unit: million yen) Items Non-consolidated NGK Spark Plug Group* Investment Expense Investment Expense Major efforts Air/water pollution prevention and noise reduction Global warming prevention, energy conservation Effective resource utilization, industrial waste treatment/disposal Subtotal ,355 1, ,810 1,714 Employee environmental education, EMS construction and operation Employee environmental education, EMS construction and operation R&D of products promoting environment preservation ,950 6, ,950 6,004 Nature protection, afforestation, environmental ads Environment damage correction cost Repair of soil contamination, disrupted nature Other costs Total ,854 7, ,391 8,297 Any inconsistency between an aggregate of all itemized figures and a Total figure is due to rounding of fractions. *Excluding Nittoku Alpha Service Value of Environmental Preservation Impact Area of recognized effect (Unit: million yen) Non-consolidated Revenue Revenue generated from the recycling of waste generated in operations or used products 222 Energy cost saving achieved from energy conservation efforts 45 Cost saving Reduction of water expenses through water saving 2 Waste disposal cost saving achieved by resource conservation and recycling efforts 5 Total 274 Quantity of Environmental Preservation Impact Effect measured in the business area Effect measured with respect to resource input into operations Classification Non-consolidated NGK Spark Plug Group Types of effect Difference from the Difference from the previous fiscal yea previous fiscal year Purchased electricity (GWh) Energy consumption Gas (million m 3 ) LPG (tons) 3,700 3, ,312 8, Heavy oil A (kl) Tap water(m 3 ) 751, ,868 21, , ,315-52,202 Water consumption Well water(m 3 ) 570, , , , ,603-28,950 Quantity of PRTR law-regulated substances handled (tons) Effect CO2 emission from energy consumption (tons) 116, ,294 6, , ,547 16,694 measured with Recycled plant wastewater *(m 3 ) 940, , ,161 1,125, , ,907 respect to Effectively utilized environmental 12,839 12, ,026 16, mass (tons) load and waste Waste Buried, incineration from business (tons) activities PRTR law-regulated substances released into air and water (tons) *Definition of recycled plant wastewater: Recycled water is defined as water that is reused after treatment of waste water.

10 39 W Waste Volume of Waste Generated at Each Business Site The volume of waste generated in fiscal 2011 in the the affiliated is listed in the table as follows. Volume of emissions (tons) Volume effectively Recovery rate used (tons) Volume of buried and incineration (tons) Recovery rate (%) Head Office / % Komaki 8,288 8, % NGK Spark Plug Miyanojo 3,455 3, % Ise % Takenami % Subtotal 12,884 12, % Iijima % NTK Nakatsugawa % Kani % Komaki 1,468 1, % Nansei % Kamioka % Affiliates Nittoku Seisakusho % Nichiwa Kiki % Tono % Sensor % Tokai Taima Kogu % Nittoku Unyu % Subtotal 3,935 3, % Total 16,819 16, %

11 42 W Hazardous Substances PRTR data for Each Business Site Head Office/ Komaki Including NTK ceramic (Komaki Miyanojo Ise Cabinet order No. chemical substance The table contains the substances that each business location was required to report Quantity handled (kg) Quantity released Quantity transferred Quantity processed Quantity taken out Atmosphere Public Public Buried and Effective Incineration water Soil on the Disassociation Product/ area sewer incineration use premises reaction Sold 53 Ethylbenzene 5, , Xylene 24, , Chromium and chromium (Ⅲ) compounds 12, , Inorganic cyanide compounds (except complex salts and cyanates) 1, , ,2,4-trimethylbenzene 10, , ,3,5-trimethylbenzene 2, , Toluene 69, , Nickel 79, , n-hexane 6, , Benzene 2, , manganese and its compounds 1, , aminoethanol 18,072 17, n-alkylbenzenesulfonic acid and its salts (alkyl C=10-14) 1,026 1, Antimony and its compounds 1, , Ethylbenzene 3, ,152 1, Xylene 19,965 2,259 9,397 8, Chromium and chromium (Ⅲ) compounds 1, Cobalt and its compounds 1, , Inorganic cyanide compounds (except complex salts and cyanates) 5, ,069 2, Copper salts (water-soluble,except complex salts) 76, ,436 75, Toluene 24, , Nickel 18, , Nickel compounds 6, ,179 4, Benzene Boron compounds 34, , , poly (oxyethylene) alkyl ether (alkyl C=12-15) 1,957 1, Poly (oxyethylene) nonylphenyl ether 1,338 1, Formaldehyde 4,475 4, Molybdenum and its compounds 1, ferric chloride 40,341 40, Chromium and chromium (Ⅲ) compounds 1, , Inorganic cyanide compounds (except complex salts and cyanates 1, , Nickel 151, , Boron compounds 7, , Cobalt and its compounds 1, Lead compounds 40, ,436 32,209 Subtotal 684,216 2, , , , Ethylbenzene 10,528 3,625 6, Xylene 5,669 1,952 3, Chromium and chromium (Ⅲ) compounds 1, NTK 144 Inorganic cyanide compounds (except complex salts and cyanates) 2, , (Iijima 300 Toluene 20,369 20, Nickel 1,778 1, di-n-butyl phthalate 6,116 1,398 4,718 NTK (Nakatsugawa 53 Ethylbenzene 1, Xylene 8,098 3,044 4, Chromium and chromium (Ⅲ) compounds 6,505 3,098 3, Toluene 110, ,797 3, Lead compounds 6,177 3,068 3, di-n-butyl phthalate 24,729 10,799 3,796 10, Molybdenum and its compounds 4,721 3, bis (2-ethylhexyl) phthalate 2, ,425 NTK 80 Xylene 1,701 1, (Kani 354 di-n-butyl phthalate 2,497 1, Nansei bromopropane 1,533 1,533 Nittoku Seisakusho 308 Nickel 10,905 10,905 (Oguchi Sensor 333 Hydrazine 10,989 9,538 1, Hydrogen fluoride and its water-soluble salts 3,546 3, Boron compounds 1, Subtotal 246, , ,123 12,598 36,600 Total 930, , , , ,355

12 44 W Local clean-up activities Clean-up Activities around our Business Sites (people) Number of operations implemented Total number of participants Head Office/ 7 84 NGK Spark Plug Komaki Miyanojo 3 94 Ise 2 43 Subtotal Iijima 2 42 NTK Nakatsugawa 2 19 Kani 2 27 Komaki 2 10 Nansei 4 45 Kamioka 2 51 Affiliates Nittoku Seisakusho Head Office/ 3 38 Oguchi 4 42 Satsuma 4 40 Nichiwa Kiki 2 57 Tono Sensor 3 46 Tokai Taima Kogu 2 12 Subtotal Total Clean-up activities initiated by a local government, etc. (people) factories and Event name Held by Location Number of participants NGK Spark Plug (Komaki, Sensor Mt. Komaki Beautification Activities Komaki City Mt. Komaki 17 NGK Spark Plug (Komaki, Sensor Citizens Action Day for prevention of garbage scattered & Komaki Beautification Walk for COP10 Council for Comfortable & Clean Town, Komaki City Area around the Komaki City Hall 19 NTK (Iijima Picnic for the Environment of the Tenryu River System Ina Techno Valley Regional Center of the Nagano Techno Foundation, etc. Area where the Ohtagiri River and the Tenryu River meet 20 NTK (Kani Kani River mass cleanup Kani City Kani River 19 Nittoku Seisakusho (Oguchi Oguchi Town cleanup activities Oguchi Town Oguchi area 9