The list is in alphabetical order and not sorted by product catagories since many are highly diversified multi-diciplinary indutrial groups.  Some are listed with more recognised old names as well as less known new names for easy search.

Aalborg 

Ace Valve

Air Water

Ainoura Kikai

Akasaka Diesel

Alfa Laval

Ameroid

Apollo

A-Rim Machinery

Asahi Mechatronic

Bae Yoeu Industry

Azbil

BEMAC

Bunka Boeki

BY Controls

Cargotec

Chuo Kosan

CKD

CMR

Conhira

Consilium Nittan Marine

Dae Han

Daelim

Dae Sung

Daeyang Electric

Daiden

Daido

Daiichi Seisakusho

Daikin Industries

Daimaru Yuki

Danfoss

Diesel United

Donghwa Entech

Donghwa Pneutech

Don Nam

Eagle Industry

Ebara

FENIC

Fifi4Marine

Fuji Diesel

Fuji Electric

Fujiki Seisakusho

Fujimak

Fukui Seisakusho

Fukushima Seisakusho

Furukawa Electric

Furuno

Futaba Seisakusho

Gadelius

Goko Seisakusho

Hanla

Hanshin Diesel

Hanshin Electric

Harison

Hasytec

Heishin-Kikai Kogyo (HSN-Kikai) 

Heishin Ltd.

Hi-Air (Hi-Pres Korea)

Hisaka Seishakusho

Hitachi

Hiyoshi Mentech

Hoei Senpaku

Hokushin Electric

Hyoda Gauge

Hyosung

Hyup Dong

Ibuki Kogyo

Ishikawajima Harima Heavy Idustries (IHI)

Ito Engineering

Isuzu

Izumi Electric (IDEC)

Japan Air Motor

Japan Radio Co. (JRC)

JRCS Mfg.

JFE

Jonghap Tanabe

Jokwang

Jung-A

Kamome Propeller

Kanagawa Kiki

Kaneko

Kangrim Industry

Kansai Automation

Kashiwa

Kawasaki Heavy Industries

Oki Electric

Okumura Seisakusho

Omron

Onomichi Sangyo

Osaka Boiler

Osaka Dennetsu

Osaka Jack

Osaka Zhoki

Panasia

Panasonic

Risun

Saacke Japan

Saginomiya

Saint-Gobain

Samgong

Samkun Century

Sankei Design

SARACOM

Sasakura Engineering

Sawada Seisakusho

Seamate

Seaplus

Sekigahara Seisakusho

SEMCO

Senpaku Shoji

Sewon

Shengan Marine

Shigi Zosen

Shimazu Seisakusho

Shinko Electric

Shinko Industry

Shin Myung

Shonan Kosakusho

SKF

SMC

STADT

Stern Keeper

Suction Gas Engineering

Sumimoto Scientific Institute

Sumitomo Eaton

Sumitomo Seimitsu

Sunflame

Sunrod

Taiko Kikai Industries

Teikoku Machinery Works

Taisei Kogyo

Taiyo

Taiyo Electric

Tokyo Rosi

Tanabe Pneumatic Machinery

Terasaki

Tobu Jyukogyo

Tohatsu

Tokico

Tokyo Keiki (Tokimec)

Tomoe Kikai

Tomoe Valve

Tortoise Engineering

TOTO

Toyo Hoist

Toyo Seimitsu

Tratec

Tsubaki

Tsuji Heavy Insutries

Ube Industries

Uchida Hydraulic

Ushio Reinetsu

Uzushio Electric

VAF Instruments

Value Valve

Volcano

Vicus dt

Washio Churi

Wave Cyber

WE Tech

Woodward

Wuxi Delin

Yamaha

Yamashina Seiki

Yamatake

Yanmar Diesel

Yokogawa

Yoowon Industry

ZEXEL

Zhengjiang Marine

Makers List

Kawasaki Safety

Kawamura Seiki

Kayaba MacGregor

KEMEL

Keystone Valve

Kikan Buhin

Kitagawa

Kitz

Kobe Diesel

Kobe Separator

KOBELCO

Koei Sangyo

Komatsu

Koyo Bearing

Kubota

Kukdon Elecom

Kuramoto Keiki

Kwang San

Kyoritsu Kikai

Koei Sangyo

Komatsu

Kubota

Kumera

Kuramoto Keiki

Kyoritsu Kikai

MacGregor Far East

Makita

Matsuhita

Marine Radio Co. (MRC)

Masuda Seisakusho

Matsubara Iron Works

Matsui Diesel

Maekawa Seishakusho

Mansei Industry

Mecman

Meiyo Electric

ME Production

Mikuni

Misuzu Machinery

Mitsubishi Electric

Mitsubishi Heavy Industries

Mitsubishi Kakoki Kaisha (MKK)

Mitsuboshi Chuki

Mitsui Engineering Services

Mitsumoto Valve

Miura

Miyairi Valve

Mt. Halla Valve (Mt.H)

Murayama Electric

Musasino

Nagano Keiki

Nagao

Nakakita Seisakusho

Nakano Seisakusho

Nakashima Propeller

Nakata Mac

Namirei

NGK

Nihon Seiki

Niigata Convertor (NICO)

Niigata Diesel

Niigata Worthington

Nikuni Kikai

Niikura

Nippon Air Brake Co. (NABCO)

Nippon Controls

Nippon Corrosion

Nippon Electric Instrument

Nippon Hakuyo Electric

Nippon Ican 

Nippon Oil Seal (NOS)

Nippon Pusnes

Nippon Zosen Kikai (NZK)

Nishida Boiler Service (NBS)

Nishishiba Electric

Nittan

Nitto Seiko

Nobel

Noboru

Nohken

Nohmi Bosai

NSK

NTN Bearing

Nunotai 

Ohonishi Electric

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