< JAPAN >
AISIN AW CO., LTD.
AISIN SEIKI CO., LTD.
ACRO NAINEN CO., LTD
BENKAN JAPAN KK.
BOSCH CORPORATION
Calsonic Kansei Utsunomiya Corporation
DAIHATSU MOTOR CO., LTD.
DAIKIN INDUSTRIES LTD.
ENSHU Limited.
ENSHU SEIKO CO., LTD.
FUJI HEAVY INDUSTRIES LTD.
FUJI MACHINARY CO., LTD.
HITACHI LTD.
HKS CO., LTD.
HONDA FOUNDRY CO., LTD.
ISUZU MOTORS LIMITED
I METAL TECHNOLOGY CO., LTD.
JATCO LTD.
JIDOSHA BUHIN KOGYO CO., LTD.
Kojo Kogyo Co., Ltd.
KOMATSU LTD.
KOMATSU CUMMINS ENGINE CO., LTD.
Komatsu NTC Ltd.
KOLBENSCHMIDT K.K.


MAHLE Engine Components Japan Corporation
Mazda Motor Corporation.
Mitsubishi Motors Corporation.
NISSAN KOHKI CO., LTD.
NISSAN MOTOR CO., LTD.
OHMURA SEISAKUSHO CO., LTD.
ONDO CORPORATION
PRESS KOGYO CO., LTD.
SANDEN CORPORATION
SHIMIZUHARA CORPORATION
SUZUKI MOTOR CORPORATION
TAIYO MACHINERY CO., LTD.
TATEKITA METAL CO., LTD.
TOYO ADVANCED TECHNOLOGIES
TOYOTA INDUSTRIES CORPORATION
UD Trucks Corporation
Unisia Kyushu Co., Ltd.
YAMABIKO CORPORATION
YAMATE CORP
YANAGAWA SEIKI CO., LTD.
YOSHIWA KOGYO CO., LTD.  

< CHINA >
KOLBENSCHMIDT SHANGHAI PISTON CO., LTD.
MAHLE ENGINE COMPONENT
(CHONGQING) CO.,LTD
QUFU JINHUANG PISTON CO., LTD.
SHANDONG SHUANGGANG PISTON CO., LTD.
SHANDONG VOLO PRECISION PISTON
   MANUFACTURE CO.,LTD
< INDONESIA >
PT.ASTRA HONDA MOTOR
PT.FEDERAL IZUMI MANUFACTURING
< KOREA >
GM KOREA Company
RENAULT SAMSUNG MOTORS CO.,LTD
HYUNDAI MOTOR COMPANY
INJI PLUS CORP.
< MALAYSIA >
PERODUA MANUFACTURING SDN,BHD.
< MEXICO >
NISSAN MEXICANA S.A.DE CV
BREMBO RASSINI S.A.DE CV
< TAIWAN >
YUE LOONG MOTOR CO., LTD.
RIGHT WAY INDUSTRIAL CO., LTD.
< THAILAND >
ACRO (THAILAND) CO., LTD.
ART-SERINA PISTON CO., LTD.
HONDA FOUNDRY (ASIAN) CO., LTD.
MAHLE ENGINE COMPONENTS
   (THAILAND) CO., LTD.
< USA >
AISIN AUTMOTIVE CASTING. LLC
YSK CO.