| Aichi Machine Industry Co., Ltd. | Knorr-Bremse Commercial Vehicle Systems Japan |
| Aisan Industry Co., Ltd. | Komatsu Lift Co., Ltd. |
| Aisan Ai Co., Ltd. | Kyokuyo Shipyard Corporation |
| Aisin Aw Co.，Ltd. | Mazda Motor Corporation |
| Aisin Aw Seimitsu Co., Ltd. | Mazda Sangyo Co., Ltd. |
| Aisin Seiki Co., Ltd. | MHI Diesel Service Co., Ltd. |
| Aisin Takaoka Co., Ltd. | MHI Maritekku Co. |
| Akebono Brake Ind.Co., Ltd. | Mikuni Corporation |
| Anden Co., Ltd. | Mitsuba Corporation |
| Araco Corporation | Mitsubishi Heavy Industries |
| BMW(宝马) | Mitsubishi Motors Corporation |
| Bosch Braking Systems Co., Ltd. | Mitsui Engineering & Shipbuilding Co., Ltd. |
| Bridgestone Cycle Co., Ltd. | MOL(商船三井) |
| Bridgestone Metalpha Corporation | Nabco Ltd. |
| Calsonic Kansei Corporation | Nippon Cable System Inc. |
| Central Motor Wheel Co., Ltd. | Nippon Giant Tire Co., Ltd. |
| Daido Metal Co., Ltd. | Nippon Seiki Co., Ltd. |
| Daihatsu Diesel Mfg. Co., Ltd. | Nippon Yusoki Co., Ltd. |
| Daihatsu Motor Co.，Ltd. | Nissan Diesel Motor Co., Ltd. |
| Daimler Chrysler | Nissan Motor Co., Ltd. |
| Delphi Automotive Systems | Nissan Shatai Co., Ltd. |
| Delta Kogyo Co., Ltd. | Nusec |
| Denso Co.，Ltd. | OHI Seisakusho Co., Ltd. |
| Exedy Corporation | Onomichi Dockyard Co., Ltd. |
| Fuji Heavy Industries, Ltd. | Pacific Engineering Corp. |
| Fuji Kiko Corporation | Pacific Industrial Co., Ltd. |
| Fuji Univance Corporation | Peugeot |
| Fujitsu Ten Ltd. | Rover Japan Ltd. |
| Futaba Industrial Co., Ltd. | Ryosen Engineers Co., Ltd. |
| GE Engine Services | Sanoh Industrial Co., Ltd. |
| General Motors Asia Pacific(Japan )Limited | Shiroki Corporation |
| General Motors Japan Ltd. | Somicishikawainc. |
| Goodyear Japan Ltd. | Suzuki Motor Corporation |
| Harley-Davidson Japan K.K. | Tachi-S |
| Hashimoto Forming Industry Co. | Takashimaya Nippatsu Kogyo Co., Ltd. |
| Hayashi Telempu Co., Ltd. | TCM Corporation |
| Hino Motors，Ltd. | Technovainc. |
| Hiroshima Aluminum Industry Co.，Ltd. | Tennex Co. |
| Hirotec Corporation | Tochigi Fuji Sangyo K.K. |
| Hitachi Automotive Engineering | Topy Industries, Ltd. |
| Hitachi Zosen Corporation | Toyo Roki Co., Ltd. |
| Honda Lock Mfg.Co., Ltd. | Toyoda Gosei Co., Ltd. |
| Honda Motor Co., Ltd. | Toyodatekko Co., Ltd. |
| HTC | Toyotaauto Body Co., Ltd. |
| Ichikoh Industries, Ltd. | Toyota Motor Corporation |
| Ikeda Bussan Co., Ltd. | Toyota Motor Kyushu, Inc. |
| Ishikawajima Mass-Produced Machinery Co., Ltd. | Toyota Techno Service Corp. |
| Ishikawajima-Harima Heavy Ind. | Toyotomi Kiko Co., Ltd. |
| Isuzu Motors Ltd. | Tsuda Industry Co., Ltd. |
| Japan Aircraft Mfg. Co., Ltd. | Tsuneishi Shipbuilding Co., Ltd. |
| Japan Brake Industrial Co., Ltd. | Turbo Systems United Co., Ltd. |
| Japan Climate Systems Corporation | Unipres Corporation |
| Jatco Transtechnology Ltd. | Usui Kokusai Sangyo Kaisha, Ltd. |
| JECS | Volks Wagen Group Japan K.K. |
| Jidosha Buhin Kogyo Co., Ltd. | Yamaha Motor Co., Ltd. |
| Jidoshadenkj-Kogyo Inc. | Yanmar Shipbuilding & Eng. Co. |
| Johnson Controls Holding Company Incorporated | Yazakj Corporation |
| Kansei Corporation | YNS Inc. |
| Kanto Auto Works Ltd. | Yorozu Co. |
| Kasai Kogyo Co., Ltd. | Yumex Corporation |
| Kawasaki Heavy Industries, Ltd. | Yunisiajecs Corp. |
| Kayaba Industry Co., Ltd. | Yutaka Giken Co., Ltd. |
| Keeper Co., Ltd. |
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