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TPR Co., Ltd.
iers that primarily handle engine parts are facing increasingly severe business management. Owing to suspended or reduced vehicle production caused by the coronavirus (COVID-19) pandemic, four major Japanese engine parts suppliers, TPR Co., Ltd., Riken Corporation, Nippon Piston Ring Co., Ltd., and Nittan Valve Co., Ltd., announced poor financial results for the fiscal year ended in March 2021. All of their sales declined, and Nippon Piston Ring ...
Major Suppliers Updated at: 2026/03/20
Nittan Corporation (Formerly Nittan Valve Co., Ltd.)
Nittan Corporation (Formerly Nittan Valve Co., Ltd.) Japan Lee Tai Hwan (President) -The Company is an independently-owned parts manufacturer that boast world-class, hot forging technology for producing engine valves. Manufactures engine valves for automobiles, precision forged gears, NT-VCP (Variable Valve Timing systems), valve lifters, roller rocker arms, etc. The company is working on creating a production system for manufacturing hyper hollo...
Major Suppliers Updated at: 2026/01/28
Riken Corporation
iers that primarily handle engine parts are facing increasingly severe business management. Owing to suspended or reduced vehicle production caused by the coronavirus (COVID-19) pandemic, four major Japanese engine parts suppliers, TPR Co., Ltd., Riken Corporation, Nippon Piston Ring Co., Ltd., and Nittan Valve Co., Ltd., announced poor financial results for the fiscal year ended in March 2021. All of their sales declined, and Nippon Piston Ring ...
Major Suppliers Updated at: 2025/12/16
Nippon Piston Ring Co., Ltd.
iers that primarily handle engine parts are facing increasingly severe business management. Owing to suspended or reduced vehicle production caused by the coronavirus (COVID-19) pandemic, four major Japanese engine parts suppliers, TPR Co., Ltd., Riken Corporation, Nippon Piston Ring Co., Ltd., and Nittan Valve Co., Ltd., announced poor financial results for the fiscal year ended in March 2021. All of their sales declined, and Nippon Piston Ring ...
Major Suppliers Updated at: 2025/12/16
PT. Astra Otoparts Tbk
no Gear Co., Ltd, Daido Steel Co., Ltd., Denso International Asia Pte.Ltd., DIC Corporation, Gemala Group, GS Yuasa International Ltd., Juoku Technology Co., Ltd., Kayaba Corporation, Keihin Seimitsu Kogyo Co., Ltd., Mahle Engine Component Japan Corp., Metalart Corporation, Nippon Gasket Co., Ltd., Nittan Valve Company Limited, NTN Corporation, Pirelli Tyre S.p.A, Hangzhou Sunfun Chain, Co., Ltd, Toyoda Gosei Co., Ltd, Toyota Industries Corporati...
Major Suppliers Updated at: 2025/12/15
Eaton Corporation plc
S.A. 2007 -Purchased the fuel components division of Saturn Electronics & Engineering, Inc.-Sold its mirror controls division, part of the Company's automotive group 2008 -Acquired the engine valves business of Kirloskar Oil Engines Ltd.-Formed a joint venture, Nittan Global Tech Co., Ltd. with Nittan Valve Co., Ltd. of Japan.-Acquired Integ Holdings Limited, the parent company of Integrated Hydraulics Ltd., a U.K. manufacturer of screw-in ca...
Major Suppliers Updated at: 2025/07/28



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