| Kyoritsu Kikai |
| Nakano Seisakusho |
| Sanwa |
| Sanyo Works |
| Dodwell |
| Exeno Yamamizu |
| Hikari Sangyo |
| Yanmar |
| Daikin |
| Namirei |
| Nissin Refrigeration |
| Takatori Seisakusho |
| Toyo Engineering |
| Ushio Reinetsu |
| Kawasaki Heavy Industries |
| Seo Koatsu Kogyo |
| Suction Gas Engine |
| Exeno Yamamizu |
| Harrison Sangyo |
| Misuzu Machinery |
| NABTESCO K.K. (Ex. NABCO ) |
| Nihon Seiki |
| Nippon Control's |
| Sasakura |
| ZANDER - Germany |
| Ibuki Kogyo |
| Izumitatsu Kogyo |
| Fujiki Shokai |
| Japan Air Motor |
| Onomichi Anchor |
| Hamanaka Chain |
| Japan Mechanical Chain |
| Nippon Chain & Anchor |
| Nakabohtec |
| Nippon Corrosion Engineering |
| Saacke Japan |
| Japan Radio Co (JRC) |
| Nippon Hakuyo |
| OKI Electric |
| Ebara Hamada Blower |
| Nishishiba |
| Ohnishi |
| Osaka Blower |
| Dodwell |
| Mansei Industry |
| Miura Vider |
| Sekigahara Seisakusho |
| Tsuji Industries |
| Aalborg |
| IHI |
| Kawasaki |
| Mitsubishi |
| Mitsui Engineering |
| Miura Protec |
| Nishida Marine Boiler |
| Osaka Boiler |
| Sasebo |
| Takuma Machinery |
| Tortoise Engineering |
| Kamome Propeller |
| Kawasaki Heavy Industries |
| Mitsubishi Heavy Industries |
| Nakashima Propeller |
| Sun Flame |
| Volcano |
| Asano Shokai K.K. |
| Harrison Sangyo |
| Onken |
| Osaka Dennetsu Kogyo |
| Shimadzu |
| Yamashina Seiki |
| Japan Radio & Electric |
| Japan Radio Co (JRC) |
| Taiyo Electric |
| Terasaki Electric |
| Uzushio Electric |
| Yamatake Honeywell |
| Fukushima |
| IHI |
| Japan Steel Works |
| Kawasaki |
| Mitsubishi |
| Nippon Pusnes |
| Noreq SA-Norway |
| Tsuji Industries |
| Anritsu |
| Furuno |
| Japan Radio Co (JRC) |
| Nishishiba |
| Shinko Electric |
| Taiyo Electric |
| Tokimec |
| Yokogawa Denshi Kiki |
| Daiichi |
| EDUR – Germany |
| Noreq SA-Norway |
| Kashiwa |
| Nippon Pusnes |
| Japan Radio |
| NABTESCO K.K. (Ex. NABCO ) |
| Nunotani Hakuyo Keiki |
| NZK |
| Terasaki Electric |
| IHI |
| Mitsubishi |
| Miura Protec |
| Osaka Boiler |
| Sasebo Heavy Industries Ltd. |
| Takuma Machinery |
| Yamashina Seiki |
| Chris Marine |
| Daido Kinzoku Kogyo K.K. |
| Motoyama |
| Riken Koki |
| Uno Kogyo Co. |
| Kawasaki Safety Service Industries |
| Nittan K.K. |
| Nohmi Bosai |
| Alfa-Laval K.K. |
| Nippon Control's |
| Sasakura Engineering |
| Fujimac |
| Mitsuboshi Chuki |
| Sakae Sinpaku Denki |
| Sanwa Churi Industry |
| Washio Churi Industries |
| Mitsubishi Electric |
| Nishishiba Electric |
| Shinko Electric |
| Taiyo Electric Co., Ltd. |
| NABTESCO K.K. (Ex. NABCO ) |
| Woodward Governor |
| Tokimec |
| Yokogawa Denshi Kiki |
| Mac Gregor-Kayaba |
| Nakata Mac Corp. |
| Nippon Ican |
| Tsuji Industries |
| Alfa-Laval K.K. |
| Harrison Sangyo |
| Hisaka Works |
| Nissin Refrigeration & Engineering |
| Sasakura Engineering |
| Setouchi Kogyo |
| Showa Industrial |
| Yamashina Seiki |
| Dodwell |
| Japan Steel Works |
| Aalborg Industries |
| Miura Protec Ltd. (Ex. Miura ) |
| Sun Flame |
| Volcano |
| Aalborg Industries |
| Kashiwa |
| Misuzu Machinery |
| Dainichi Kinzoku Kogyo |
| Tachiyagawa Machinery |
| IHI Craft Inc. |
| Ishihara Dockyard |
| Shigi Shipbuilding |
| Fujikura Rubber |
| Sumitomo Industries |
| Toyo Tire & Rubber |
| Kokosha |
| Morio Denki |
| Sanshin Senpaku Dengu |
| Senpaku Shoji |
| Shonan Kosakusho |
| Daiki Engineering |
| Japan Carlit |
| Nippon Corrosion Engineering |
| Saacke Japan |
| Yokohama Denko |
| Fellow Kogyo |
| Heishin Pump Works |
| Misuzu Machinery |
| Sasakura |
| Sumitomo Precision |
| Daihatsu |
| Alfa-Laval K.K. |
| Mitsubishi Kakoki Kaisha |
| Tomoe Engineering |
| Alfa-Laval K.K. |
| Heishin Pump Works |
| Taiko Kikai Industries |
| NABTESCO K.K. (Ex. NABCO ) |
| Kamome Propeller |
| Kawasaki |
| Mitsubishi |
| Nakashima Propeller |
| Nippon Ican |
| Nunotani Hakuyo Keiki |
| NZK |
| Kyoritsu Kikai |
| Mansei Industry |
| Sekigahara Seisakusho |
| Tsuji Industries |
| Daikin |
| Namirei |
| Nippon Sabroe |
| Nissin Refrigeration |
| Ushio Reinetsu |
| Anritsu |
| Furuno |
| Japan Radio Co (JRC) |
| Nippon Hakuyo |
| Daito Kogyo |
| DMW |
| Ebara |
| Fujita |
| Heishin Pump |
| Ishii Pump |
| Kawasaki |
| Kosaka Laboratory |
| Naniwa Pump |
| Niigata-Worthington |
| Shinko |
| Taiko Kikai |
| Teikoku Machinery |
| Anritsu |
| Furuno |
| Japan Radio Co (JRC) |
| Tokimec Inc. |
| Anritsu |
| Furuno |
| Japan Radio Co. (JRC) |
| Kuramoto Instrument |
| Nunotani Hakuyo Keiki |
| NZK |
| Eiwa |
| Rikadenki |
| Sasakura |
| Heishin Engineering |
| Sasakura |
| Nakabohtec |
| Nippon Corrosion Engineering |
| Saacke Japan Tratec |
| Kikan Buhin |
| Miura Protec Ltd. (Ex. Miura ) |
| Osaka Boile |
| Takuma Machinery |
| Tortoise Engineering |
| Hitachi Zosen |
| Kawasaki |
| Mitsubishi |
| Shinko |
| Kawasaki |
| Mitsubishi |
| Mitsui Engineering |
| Japan Marine Technologies |
| Kobelco Eagle Marine (Ex. Eagle Industry ) |
| Kobelco Eagle Marine (Ex. Kobe Steel ) |
| Stern Keeper |
| Ameroid Japan |
| Hasegawa (Anqing) Marintec |
| Kanagawa Kiki Kogyo |
| Mizuno Stariner |
| Niikura Kogyo K.K. |
| Japan Radio & Electric |
| Kuwahata Electric |
| Taiyo Electric |
| Terasaki Electric |
| Ushio Reinetsu |
| Uzushio Electric |
| Exeno Yamamizu |
| Niikura Kogyo K.K. |
| Musashino |
| Nagano Keiki |
| Nakakita Seisakusho |
| Tokimec Inc. |
| Tokyo Keiso |
| Sekigahara Seisakusho |
| Toyo Hoist |
| Hitachi Zosen |
| IHI |
| Kawasaki |
| KKK – Germany |
| Mitsubishi |
| Mitsui Engineering |
| BF Kogyo Kaisha |
| James Burry |
| Nakakita Seisakusho |
| NBS Engineering |
| Niigata Engineering |
| Nippon Keystone |
| Tomoe Valve |
| Nakakita Seisakusho |
| Sankyo Seisakusho |
| Utsue Valve |
| Venn |
| Misuzu |
| Nakakita Seisakusho |
| Sumitomo Precision |
| Tokimec Inc. |
| Fukui Seisakusho |
| Nakakita Seisakusho |
| Sankyo Seisakusho |
| Venn |
| Nippon Electric |
| Nunotani Hakuyo Keiki |
| Fukushima |
| IHI |
| Kawasaki |
| Kubota |
| Mitsubishi |
| Nippon Pusnes |
| Tsuji Industries |