We took the first step by integrating Mitsubishi Chemical Corporation and Ube Industries, Ltd.'s domestic electrolytes business for lithium-ion batteries (LIB) etc. and established our company in October 2020.

As the world faces environmental problems on a global basis, the trend toward electric vehicles is accelerating as a response to carbon neutrality, which the world is aiming for in the medium to long term. Accordingly, lithium-ion battery (LIB) market used in electric vehicles is expected to expand.

Both Mitsubishi Chemical and Ube Industries have a long track record in the business of electrolytes for LIB, and we will leverage the strengths of both companies to enhance competitiveness by synergies in product development, SCM, production, and sales.

Our manufacturing sites include Yokkaichi Plant (in Mie Prefecture) and Sakai Plant (in Osaka) in Japan, and Changshu UM Battery Materials Co., Ltd. in China, which is a group company. In addition, we will promote the optimization of SCM, production, and sales in four regions around the world, including Mitsubishi Chemical's manufacturing sites in U.K. and U.S., and work together as a group to expand our market share mainly targeting electric vehicle market, where demand is expected to grow, as well as contributing to a carbon neutral society through our business.

We look forward to your continued support and encouragement.

Masaaki Tsuchiyama, President and Chief Executive Officer

Masaaki Tsuchiyama, President and Chief Executive Officer Masaaki Tsuchiyama, President and Chief Executive Officer


Company Name
MU Ionic Solutions Corporation
Head Office
1-1 Marunouchi 1-chome, Chiyoda-ku, Tokyo 100-8251, Japan
October 1, 2020
Paid-in Capital
JPY 350 million
Mitsubishi Chemical Corporation (80%), Ube Industries, Ltd. (20%)
Line of Business
Electrolytes for lithium-ion batteries etc.


Leveraging Synergies from Integration and Respond to Global Needs

MU Ionic Solutions Corporation (MUIS) was established in October 2020, by merging electrolytes business of Mitsubishi Chemical Corporation and Ube Industries, Ltd.
By combining technologies and knowledge of both companies, and cooperating with our Chinese subsidiary (Changshu UM Battery Materials Co., Ltd. (UMBM)), as well as Mitsubishi Chemical's overseas Group Companies (US and UK), we will continue to meet the global demand of our customers.

Before MUIS

Before MUIS

After MUIS

After MUIS

MCA: Mitsubishi Chemical America, Inc. (former:MCIS-US)
MCUK: Mitsubishi Chemical UK Limited (former:MCIS-UK)
UMBM: Changshu UM Battery Materials Co., Ltd.


Mitsubishi Chemical Engineering Corporation Ube Industries, Ltd.
Start manufacturing and sales of electrolytes for Lithium-ion primary batteries
Start manufacturing and sales of electrolytes for Lithium-ion secondary batteries
Start manufacturing and sales of electrolytes for Lithium-ion secondary batteries
Forming joint venture company between Mitsubishi Chemical and Ube, in China (UMBM)
Forming joint venture company between Mitsubishi Chemical and Ube, in China (UMBM)
MU Ionic Solutions Corporation (MUIS)

October 1, 2020
MUIS was established as joint venture company


  • Environmental
  • Life Cycle
  • Respecting
    Property Rights
  • Respect for
    Human Rights

Environmental Conservation

Among the environmental issues the chemical industry faces, positions global warming and climate change as the highest priority it must address. Therefore, the Group has been making a concerted effort to reduce greenhouse gas (GHG). Besides reducing GHG emissions arising from its business activities as a matter of course, the Company is also working to develop products that generate lower GHG emissions when used.

Life Cycle Assessments

MUIS identifies and discloses GHG emissions resulting from the delivery to plants of raw materials purchased, customers' use of products, and the disposal of products. These are known as Scope 3 emissions. MUIS began identifying its Scope 3 emissions in Japan and receiving third-party assurance in fiscal 2012. Going forward, the Company intends to extend the reach of this initiative to include overseas sister companies.

Respecting Intellectual Property Rights

When MUIS develops a new technology, product or service, it seeks to formalize and legally protect its rights to the value of such development using patents and other methods. MUIS takes appropriate measures when its own intellectual property rights are infringed upon by other parties. At the same time, the Company endeavors to respect the valid intellectual property rights of other parties and carries out careful research to ensure that it does not infringe upon such rights.

Respect for Human Rights

We understand our business may have human rights impacts both inside and outside the company throughout our business activities, including from research and development, procurement of raw materials, manufacturing, sales of products and services, distribution and disposal. We strive not to cause human rights infringement itself, nor to contribute to infringement of human rights caused by others, such as our business partners.

We are committed to respecting human rights understood as, at a minimum, those set out in the International Bill of Human Rights, and the International Labor Organization's Declaration on Fundamental Principles and Rights at Work. In addition, we support the United Nations “Guiding Principles on Business and Human Rights” and the ten principles of the United Nations Global Compact, and conduct business activities based on these principles.

We comply with the laws of the countries and regions where we operate. If local law requirements contradict internationally recognized human rights standards, we seek ways to honor the principles of international human rights without violating local laws.


Locations in Japan

Head Office
1-1, Marunouchi 1-chome, Chiyoda-ku,
Tokyo 100-8251, Japan
R&D Center (Yokohama)
1000 Kamoshida, Aoba-ku, Yokohama,
Kanagawa 227-8502, Japan
R&D Center (Yokkaichi)
1, Toho-cho, Yokkaichi-shi, Mie 510-8530, Japan
Yokkaichi Plant
3-3-17, Obata, Yokkaichi-shi, Mie 510-0875, Japan
Sales & Marketing (Osaka)
1-1, Fushimi-machi 4-chome, Chuo-ku,
Osaka-shi, Osaka 541-0044, Japan
Sakai Plant
3-1, Chikko-Shinmachi, Nishi-ku, Sakai,
Osaka 592-8543, Japan

Global Locations

  • MCA
    (Electrolyte Division)


    Mitsubishi Chemical America, Inc.
    United States of America: Tennessee (former:MCIS-US)※Mitsubishi Chemical Group Company

  • MCUK
    (Electrolyte Division)


    Mitsubishi Chemical UK Limited
    United Kingdom: Billingham (former:MCIS-UK)※Mitsubishi Chemical Group Company

  • UMBM


    Changshu UM Battery Materials Co., Ltd.
    China : Changshu

  • MUIS


    MU Ionic Solutions Corporation
    Japan: Yokkaichi and Sakai