Nakabohtec Corrosion Protecting 
Nippon Corrosion Engineering 
Saacke Japan Tratec 
Daihatsu Diesel Mfg. 
Yanmar Diesel Engine 
JFE Engineering 
Osaka Blower Mfg 
Ebara-Hamada Blower 
Nishishiba Electric  
Ohnishi Electric Industry 
Kamome Propeller 
Kawasaki Heavy Industries 
Nakashima Propeller 
Sun Flame 
Volcano 
Aalborg Industries 
Ishikawajima-Harima Heavy Industries  
Miura 
Nishida Marine Boiler  
Osaka Boiler Mfg. 
Sasebo Heavy industries 
Takuma Machinery & Engineering  
Tortoise Engineering 
Asano Shokai K.K Harrison Sangyo  
Onken  (ONSEK)
Osaka Dennetsu Kogyo 
Shimadzu Corporation Yamashina Seiki 
NABCO 
JRCS Corporation
Nunotani Hakuyo Keiki  
NZK 
Daido Kinzoku Kogyo K.K Motoyama Eng. Works  
Riken Koki 
Uno Kogyo 
Ishikawajima-Harima Heavy Industries, 
Nippon Controls Co.
Sasakura Engineering 
Kawasaki Safety Service Industries, 
Nittan Company 
Nohmi Bosai 
Fujimac Corporation
Mitsuboshi Chuki Mfg. 
Sakae Senpaku Denki 
Sanwa Churi Industry 
Washio Churi Industries 
Nabtesco Co. 
Woodward Governor 
Goko Seisakusho 
Heishin Engineering & Equipment 
Taiko Kikai Industries 
Kikan Buhin Seizosho 
Osaka Boiler Mfg 
Shinko Ind. 
Eagle Industry 
Japan Marine Technologies 
Kobe Steel 
Stern Keeper 
Ameroid Japan Service  
Kanagawa Kiki Kogyo  
Mizuno Strainer 
Niikura Kogyo 
Omiya Seiki 
Eiwa Corporation
Rikadenki Kogyo 
Akasaka Diesels, 
Diesel United,  
Fuji Diesel  
Hanshin Diesel Works
Hitachi Zosen Corporation
Kobe Diesel  
Makita Corporation
NKK Plant Engineering 
UBE Industries 
Daiki Engineering 
Japan Carlit 
Boltec 
Hitachi Seisakusho
Fellow Kogyo 
Mitsubishi Kakoki Kaisha  
Tomoe Engineering 
Natesco 
Kamoe Propeller 
Kawasaki Heavy Industries 
Yamashina Seiki 
Shinko Electric  
Taiyo Electric 
Yokogawa Denshi Kiki 
Suction Gas Engine Mfg. Co. 
Teikoku Machinery Works 
Takatori Seisakusho 
Nippon Chain & Anchor 
Dodwell & Co. 
Hikari Sangyo 
Matsubara Iron Works 
Sanwa Iron Works  
Tanabe Pneumatic Machinery  
Daikin Industries 
Namirei 
Nissin Refrigeration & Engineering  
Toyo Engineering Works 
Seo Koatsu Kogyo 
Harrison Sangyo 
Nihon Seiki 
Ibuki Kogyo 
Izumitatsu Kogyo 
Kiyomoto 
Onomichi Anchor Mfg. 
Hamanaka Chain Mfg Co. 
Japan Mechanical Chain Mfg Co. 
Nakano Seisakusho Kyoritsu Kikai
Japan Radio 
Uzushio Electric 
Azbil 
Daihatsu Deisel Mfg 
Denyo 
Niigata Power System 
Fukushima 
Japan Steel Works 
Nippon Pusnes 
Tsuji Industries 
Iknow Machinery Works  (Ainoura)
Anritsu Corporation Furuno Electric  
Fuji Elevator  
Schindler Elevator K.K
Daichi Mfg 
Kashiwa 
Macgregor-Kayaba  
Nakata Mac Corporation Nippon Ican 
Hisaka Works 
Nissin Refrigeration & Engineering 
Setouchi Kogyo  
Showa Industrial  
Alfa-Laval K.K
Fujikura Rubber 
Sumitomo Rubber Industries 
Toyo Tire & Rubber Co,  
Iknow Machinery   
Shigi Shipbuilding 
Tsuneishi Holdings Co. Hakodate Dock 
Kokosha 
Morio Denki 
Sanshin Senpaku Dengu  
Senpaku Shoji 
Shonan Kosakusho
Nippon Ican 
Kyoritsu Kikai 
Mansei Industry  
Sekigahara Seisasusho 
Nippon Sabroe 
Nippon Hakuyo Electronics
Daito Pump Kogyo  
Ebara Manufacturing  
Fujita Seisakusho 
Heishin Pump Works
Ishii Machinery Works  
Kosaka Laboratory 
Naniwa Pump Mfg.  
Niigata Worthington  
Kuramoto Instrument Mfg.  
Kuwahata Electric Mfg. Co, 
Terasaki Electric Co, 
Ushio Reinetsu Co, 
Exeno Yamamizu Co.. 
Nilikura Kogyo Co.. 
Musasino Co, 
Nagano Keiki Co. 
Tokyo Keiso Co.. 
Sekigahara Seisakusho 
Toyo Hoist Mfg. Co, 
IHI Co, 
Mitsui Engineering& Shipbuilding Co, 
Misuzu Machinery Co, 
Sumitomo Precision Products Co. 
Tokimec Inc
BF Kogyo Kaisha 
NBS Engineering Co, 
Niigata Engineering Co, 
Nippon Keystone Corp.
Tomoe Valve 
Nakakita Seisakusho Co, 
ankyo Seisakusho Co, 
Fukui Seisakusho Co, 
lakakita Seisakusho Co, 
Sankyo seisakusho Co, 
Venn 
Nippon Electric Instrument, Inc
Nunotani Hakuyo Keiki Co.. 
Ishikawajima-Harima Heavy Industries Co, 
Kubota Corporation
Mitsubishi Heavy Industries
Nippon Pushes Co.