NIPPON PISTON RING CO.,LTD.
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CORPORATE INFORMATION
Business Outline
Business Outline
Our main business is manufacturing/sales of production/replacement parts for domestic/overseas automobile, marine and land engines, such parts as piston rings, cylinder liners, and valve train parts (composite camshafts, valve seat inserts, and valve locker arms).
Building on its accumulations of tribological technology and experience, we have been moving into products other than engine parts, such as compressor parts for household electric appliances and parts for industrial machinery.
Not to miss the boat on the recent wave of globalization, we have been also aggressively promoting various programs of globalization across many fields such as sales, production, and technical assistance.
Main products
 
Piston rings/Seal rings/Cylinder liners for:
Engines for Automobile/Marine/Construction vehicles/Industrial machine, Compressor for refrigerators/air conditioners, and General industrial machinery
Valve train parts for internal combustion engines:
Valve seat inserts, Cast iron camshafts, Composite camshafts, Valve rocker arm, Valve guide, Rocker bridge
Diversifying products:
Engine parts, Electric household appliances and Industrial machinery parts, casting/sintering/plastic working (such as rolling) parts and its composite parts, Synchronizer ring, and MIM products
Main customer
TOYOTA Motor Corporation, NISSAN Motor Co., Ltd., MITSUBISHI Motors Corporation, MAZDA Motor Corporation, HONDA Motor Co., Ltd., ISUZU Motors Ltd., FUJI Heavy Industries Ltd., DAIHATSU Motor Co., Ltd., SUZUKI Motor Corporation, HINO Motors Ltd., UD Trucks Corporation, MITSUBISHI FUSO Truck & Bus Corporation, YAMAHA Motor Co., Ltd., KAWASAKI Heavy Industries, Ltd, Daimler AG, BMW AG., MITSUBISHI Electric Corporation, MITSUBISHI Heavy Industries, Ltd., KOMATSU Ltd., KUBOTA Corporation, ISEKI&Co., Ltd., MITSUI Engineering & Shipbuilding Co., Ltd., Hitachi Zosen Disel & Engineering Co., Ltd., Akasaka Diesels Ltd., KOBE DIESEL Co., LTD., HANSHIN DIESEL WORKS., LTD., HYUNDAI HEAVY INDUSTRIES Co., Ltd., MAN DIESEL SE
(Random order)
Membership of main organizations
JAPIA: Japan Auto Parts Industries Association
JSMEA: Japanese Marine Equipment Association
LEMA: Japan Land Engine Manufacturers Association
JFS: Japan Foundry Engineering Society
JAST: Japanese Society of Tribologists
JPMA: Japan Powder Metallurgy Association
Main Banks
Shinsei Bank, Limited/ The Bank of Tokyo-Mitsubishi UFJ, Ltd./ Sumitomo Mitsui Bank, Corporation/ Saitama Resona Bank Ltd./ Development Bank of Japan
 
CORPORATE INFORMATION
Company Overview
Progress of NPR
Business Outline
Japanese bases
Overseas bases
Environment and ISO
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