| Abb K.K. | Niigata Worthinton Co., Ltd. |
| Aida Engineering，Ltd. | Nikkiso Co., Ltd. |
| Amda Co., Ltd. | Nippei Toyama Corporation |
| Amada Metrecs Co.，Ltd. | Nippon Fisher Co., Ltd. |
| Amada Waslno Co.，Ltd. | Nippon Gear Co., Ltd. |
| Anest Iwata Corporation | Nippon Mayer Ltd. |
| Borg-Warnerautomotive Co. | Nippon Novellus Systems |
| Bosch Automotive Systems Corporation | Nippon Pneumatic Mfg. Co., Ltd. |
| Brother Industries, Ltd. | Nippon Seiko K. K. |
| Cataler Corporation | Nissei Industries, Ltd. |
| Caterpillar Power Systems Inc. | Njttetsu Hitachi Systems Eng. |
| Chiyodaprotec Co.，Ltd. | Nomura Micro Science Co., Ltd. |
| Chuetugoukinchukou Kabushikikamisha | Ntn Corporation. |
| Daifuku Co., Ltd. | Ntn Seimitsujyushi |
| Daiichi Jitsugyo Co.，Ltd. | Oiles Corporation |
| Daikin Industries，Ltd. | OSG Co. |
| Ebara Corporation | Precision Fukuhara Works, Ltd. |
| Flexlink Systems K.K. | Rigaku Corporation |
| Flow Japan Corporation | Riken Corporation |
| Fuji Machine Mfg. Co., Ltd. | Riso Kagaku Co. |
| Futec Co.，Ltd. | Ryonichi Engineering Co@ Ltd. |
| Furukawa Co.，Ltd. | Sakai Heavy Industries, Ltd. |
| GE Yokogawa Medical Systems，Ltd. | Sanden Corporation |
| HEC Corporation | Sandvik K.K. |
| Heidelberg-Japan K.K. | Sandvik Sorting Systems K.K. |
| Hilti Japan Ltd | Sanko Engineering Corporation |
| Hirec | Sato Corporation |
| Hitachi Chemical Techno-Plant | Shikoku Kakoki Co., Ltd. |
| Hitachiseiki Co., Ltd. | Shima Seiki |
| Honeywell Turbocharging Systems Japan Inc. | Shin Caterpillar Mitsubishi Ltd. |
| Howa Machinery, Ltd. | Shinko Pantec Co., Ltd. |
| Howmet Japan Limited | Shintobrator, Ltd. |
| Ishikawajima Construction Machinery Co.，Ltd. | Shiojiri Kogyo Co., Ltd. |
| Ishikawajima-Shibaura Machinery Co., Ltd. | Siemens K.K. |
| Janome Sewing Machine Co.，Ltd. | Silver Seiko, Ltd. |
| Japan Organo Co.，Ltd. | SKF Japan Ltd. |
| Jrctokki Co.，Ltd. | Sodick Co., Ltd. |
| Juki Corporation | Sumitomo Heavy Industries |
| Kanematsu KGK Corp. | Swagelok Japan Inc. |
| Kanzaki Kokyukoki Mfg. Co.，Ltd. | Tadano Ltd. |
| Katahira&Engineers Intl | Taihei Machinery Works, Ltd. |
| Katayama Corp. | Takuma Co., Ltd. |
| Kwamura Electric Industrial | Teijin Seiki Co., Ltd. |
| Kawata Mfg. Co.，Ltd. | The Kyoritsu Co., Ltd. |
| Kawatetsu Engineering Co. | THK Co, Ltd. |
| Kito Corporation | TLV Co., Ltd. |
| Kobayashi Engineering Works | Tomita Co., Ltd. |
| Komatsu Zenoah Co. | Toray Engineering Co., Ltd. |
| Komatsu，Ltd. | Torishimapumpmfg. Co., Ltd. |
| Komori Corporation | Toshiba Elevator Corporation |
| Koyo Seiko Co.，Ltd. | Toshiba Engineering Co., Ltd. |
| Koyo Thermo Systems Co.，Ltd. | Toshiba Ge Automation Systems Corporation |
| Kubota Corporation | Toshiba Machine Co., Ltd. |
| Kurita Water Industries Ltd. | Toyo Carrier Engineering Co. |
| Kuroda Precision Industries Ltd. | Toyo Engineering Corporation |
| Kyushu Komatsu Electronics Co., Ltd. | Toyo Kanetsu K.K. |
| Makjno J. Co., Ltd. | Toyoda Machine Works, Ltd. |
| Max Co., Ltd. | Toyota Industries Corporation |
| Meisui Co., Ltd. | Toyotsu Eng. & Mfc. Co., Ltd. |
| Mitsubishi Kakoki Kaisha Ltd. | Trinity Industrial Corporation |
| Moog Japan Ltd. | Tsubakimoto Chain Co. |
| Mori Seiki Co., Ltd. | Tsubakimoto Mayfran Inc. |
| Morita Fire Pump Mfg. Co., Ltd. | Tsukishima Kikai Co., Ltd. |
| Murata Machinery, Ltd. | Tsurumi Manufacturing Co., Ltd. |
| Nabeyabi-Tech Kaisha | Tudakoma Corp. |
| Nachi-Fujikoshi Corp. | Uchida Hydraulics Co., Ltd |
| Nagano Science Equipment Mfg. Co., Ltd | Ulvactohoku, Inc. |
| Nakamura Jico Co., Ltd. | Union Tool Co. |
| Nakanishi Metal Works Co., Ltd. | Vacs Precision K.K. |
| Nihon Millipore Limited | Xeikon Japan Ltd. |
| Nihon Pall Ltd. | Yanmar Agricultural Equipment Co., Ltd. |
| Nihon Spindle Manufacturing Co., Ltd. | Yanmar Diesel Engine Co., Ltd. |
| Niigata Converter Co, Ltd. | Yonei Co., Ltd. |
| Niigata Engineering Co., Ltd: | Zuiko Corporation |
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