Our predecessor, Mitsui Zosen Systems Research Inc. (MSR), was established in 1986 as a subsidiary company of Mitsui Engineering & Shipbuilding Co., Ltd. (MES). In April 2018, our parent company MES recognized into a holding company system and changed its trade name. Along with the parent company change, MSR also changed its name to Mitsui E&S Systems Research Inc. as a new step forward.

Our corporate philosophy is to develop as a company with value, so we have been aiming to achieve our customers’ expectation and provided the solutions and the services to the customers as their IT partner which supports their business.

Even in the recent Covid-19 situation, the evolution of IT has not stopped, and it continues to evolve at a faster speed than before. Also, due to Covid-19 virus, the change of life style has been required. The customers’ expectation for IT is getting higher, and business environment is rapidly shifting to digitalization for new normal standard with and after Covid-19.

For the digitalization, we think that data should be the fundamental of digitalization and should support decision-making. However, the data is “Alive” thing and its “Freshness” really matters. Old data can be “Rotted” and can be resulted in “Poison”. Therefore, the data obtained shall be transformed into valuable while it is fresh.

Based on these factors, we will work more closely with our customers even in this Covid-19 situation. As a result, we will have more solid understanding of our business and study issues together with the customers. Important and necessary data will be collected in a timely manner, and those data will be analyzed and utilized by MSR with AI and the latest technology to create valuable data. We aim to be a true IT partner who works for the innovation of business and working style with our valued customers.

Our Mid-term business plan 2020 which is effective for three years has started since April 2020, and that consist of three core businesses “System engineering”, “Solution service”, and “ICT”. Its second year is coming, so we will thrive each business and focus on providing digital services that combine hardware and software by our characteristics. We will continue to grow together with our valued customers, and we ask for your continued support and guidance.

President, Toshifumi Morishige


Company Name Mitsui E&S Systems Research Inc.
Abbreviated Name MSR
Head Office (Location) 1-3-D-9 Nakase, Mihama-ku, Chiba-shi, Chiba Pref. 261-8501, Japan
Representative President and Chief Executive Officer, Toshifumi Morishige
Establishment April 1986
Shareholder Mitsui E&S Co., Ltd.
Mitsui E&S Co., Ltd.
Capital 720 million Yen
Number of Employees 634 (July 2024 at present)
Sales 25.9 billion Yen (March 2024)
Directors For security reasons, please access our company profile from the pdf below:
MitsuiE&S Systems Research Inc. Directors


For security reasons, please access our company profile from the pdf below:

Mitsui E&S Systems Research Inc. Profile


Year Descriptions
2023 Opened Branch Offices in Nagoya.
2018 Trade name changed to Mitsui E&S Systems Research Inc.
2017 Opened Branch Office in Tokyo and Umeda.
2014 Whole company obtained Information Security Management System (ISMS) certification.
2012 Enterprise Solutions & Services Division (IT & Services Department) obtained Information Security Management System (ISMS) certification.
2001 Gained Privacy Mark certification
1999 Electronic Devices & Control Systems Division obtained ISO 9001 certification.
1997 Reconstructed In-company Enterprise Core Systems with integrated ERP system
1996 Opened a Branch Office in Fukuoka.
1991 Opened Branch Offices in Osaka and Nagoya.
1990 Registered and certified as SI Enterprise by the Ministry of Trade and Industry.
(This system abolished on March 31, 2011)
Relocated the Head Office from Okayama Pref. to Chiba-shi, Chiba Pref.
1986 Established as a Strategic Subsidiary of Mitsui Engineering & Shipbuilding Co., Ltd.


MAKUHARI HEAD OFFICE 1-3-D-9 Nakase, Mihama-ku, Chiba-shi, Chiba-Pref.
261-8501, Japan
TOKYO Hamarikyu Mitsui Build. 12F, 6-4 Tsukiji 5-chome,
Chuo-ku, Tokyo-Pref. 104-8439, Japan
TOYOTA Himawari Kandacho Build. 5F&6F, 2-5-3 Kandacho,
Toyota-shi, Aichi-Pref 471-0868, Japan
NAGOYA Urbannet Nagoya Build.14F,1-1-10 Higashi Sakura, Higashi-ku,
Nagoya-shi, Aichi-Pref. 461-0005, Japan
OSAKA Shin Osaka CPS Build.4F,
1-11-16 Nishi Nakashima, Yodogawa-ku, Osaka-shi,
Osaka-Pref. 532-0011, Japan
UMEDA Pacific Marks Nishi-Umeda Build. 16F, 2-6-20 Umeda,
Kita-ku, Osaka-shi, Osaka-Pref. 530-0001, Japan
OKAYAMA Taiju Seimei Okayama Build14F 8-29 Saiwai-Cho,
Okayama-shi, Okayama-Pref. 700-0052, Japan
TAMAHARA 16-3, Tamahara 3-Chome, Tamano, Okayama-Pref. 706-0014, Japan +81-863-23-3400
TAMA 3-1-1 Tama, Tamano-shi, Okayama-Pref. 706-8651, Japan +81-863-23-2370
FUKUOKA Hataka Mitsui Build. 7F, 10-1, Kamigofukumachi,
Hakata-ku, Fukuoka-shi, Fukuoka-Pref. 812-0036, Japan
OITA 3 Ouaza Hiyoshihara, Oita-shi, Oita-Pref. 870-0395, Japan +81-97-593-3756


LOCATION 1-3-D-9 Makuhari Techno Garden Nakase, Mihama-ku, Chiba-shi, Chiba-Pref.
261-8501, Japan
TEL 043-274-6162
ACCESS JR Keiyo line JR Keiyo Line: Drop off at KAIHIN MAKUHARI st.
(30 mn using Express from Tokyo st.)
JR Sobu line Drop Off at MAKUHARI HONGO st. then take the bus direction KAIHIN MAKUHARI STATION, 10mn ride to TECHNO GARDEN.
Yurakucho Subway Line Yurakucho Line to SHINKIBA, and change to JR Keiyo Line to KAIHIN MAKUHARI st.
By Car Use the KANTOHIGASHI JIDOSHADO express way, from TOKYO direction, drop off at WANGAN NARASHINO I.C from NARITA direction, drop off at MAKUHARI I.C, then drive 1.5km to JR KAIHIN MAKUHARI st. direction.



LOCATION 16-3, Tamahara 3-Chome, Tamano, Okayama-Pref. 706-0014, Japan
TELEPHONE 0863-23-3400
TRANSPORTATION TRANSPORTATION JR Uno Line: Drop off at UNO St. , then a 15mn ride onTAXI.
※Setoohashi Line: change at JR CHAYAMACHI St. for JR Uno Line.
By Bus From the express Bus between OKAYAMA and SHIBUKAWAKAN, 5mn ride on taxi from Mitsui E&S MAE.
By Car: From OKAYAMA direction, 8km ride from route 30,
From KASHIMA direction, 3km ride from route 430, MEKIBASHI BUS TERMINAL crossing,
toward SETOOHASHI Country Club.