Introduction toToyo Denki Seizo
Management Philosophy
In advancing its business activities, the Toyo Denki Group upholds and practices the following Management Philosophy, thereby earning the trust and support of shareholders and stakeholders while celebrating achievements together with its employees.
- Prioritize ethics and contribute to the prosperity of customers and society as a whole.
- Encourage creativity and enterprising spirit to meet the challenges of the future.
- Build trust by focusing on quality first.
Net Sales
As of May 31, 2025Consolidated Net Sales
40.5billion yen
Sales Breakdown by Segment
Number of Employees
As of May 31, 2025A total of 1,146 employees (consolidated)
and 784 (non-consolidated) are actively contributing to our business.
Consolidated
0employees
Non-consolidated
0employees
Business Segments
Toyo Denki Seizo contributes to society through manufacturing in three business segments. In the Transportation Business, we help provide comfort and safety in railway transport. In the Industry Business, we support everyday living and work toward greater energy efficiency. Finally, in the ICT Solution Business, we use networks to ensure reliable monitoring of operations.
Introducing Our Businesses
- Transportation Business
The electrical equipment for railway vehicles handled by the Group include control and drive systems, as well as the actual mechanisms used in railway vehicles.
As Japan’s only manufacturer capable of developing, designing, and producing all major electrical components essential to train operation, including pantographs that supply power to the train and driving gear units that transmit motor drive to the wheels, we help ensure safe and reliable railway transportation.
- Industry Business
We use advanced power electronics technology to provide social infrastructure facilities that are essential to everyday living, including testing systems for automobiles, production and processing equipment drive systems for the manufacturing industry, and power generation and power supply systems.
Our strength lies in constructing sophisticated systems using compact, energy-efficient motors and superior motor drive technology.
- ICT Solution Business
By combining advanced information and communication technology with mechatronics, we conduct operations in two fields.
We provide high-performance, reliable railway station operating equipment systems for information processing operations involving railway ticket issuing and checking systems, including issuing commuter passes and onboard tickets. Our IoT solutions use cloud technology to enable equipment and location monitoring, contributing to labor savings and reduced maintenance for our customers.
Core Values and Strengths
We primarily use a made-to-order production system that allows us to respond to customer needs, building a close network with our business partners supported by a century of experience and trust. Through our unrelenting pursuit to understand what our customers desire and bring those solutions to life, we continue to take on challenges with the aim of creating new businesses and products. By maintaining close relationships with customers and providing comprehensive support, we help uphold safety and security across society.
We believe that unleashing the motivation and creativity of each employee and promoting their growth are vital for the Company’s continued success. By maximizing our support for employee growth, we enhance our corporate value.
Contributions to Sustainability
With the aim of realizing a sustainable society, we are engaged in proactive efforts to develop environmentally friendly products and enhance energy efficiency through a wide range of business endeavors. We contribute to a sustainable future by delivering innovative technologies and solutions in diverse fields. For example, we have been improving the efficiency of electrical equipment for railway vehicles, making effective use of regenerative power, and providing testing systems to support the development of next-generation automobiles.
Propulsion Controller
Significantly smaller and lighter than previous models, contributing to energy savings
Railway Energy Storage System
Supports energy savings and safe railway transport by making effective use of regenerative power
Commuter Pass Issuing Machine
Improves convenience and reduces workload through the use of state-of-the-art ICT
In-Tyre-House Dynamo (ITHD)®
Contributes to the development of next-generation automobiles with its space-saving and low-noise design
Small Hydroelectric Power Generation Systems
Providing distributed power systems that utilize renewable energy
Operation Management System
Enhances transportation efficiency and user services through the provision of real-time location information
Medium-Term Management Plan
With the aim of restoring and improving corporate value, the period of the Medium-Term Management Plan 2026 (from the fiscal year ending May 2023 to the fiscal year ending May 2026) has been designated as a period of revitalization and transformation for Toyo Denki.
The plan outlines three basic policies: (1) the expansion of new businesses and products and (2) thorough improvement of the earnings structures of existing businesses, which will lead to (3) improvement of asset efficiency with an awareness of capital costs. Through the implementation of these policies, we aim to achieve an ROE of 8%.
Over a Century of History at Toyo Denki Seizo
Toyo Denki Seizo was founded in 1918 with the purpose of producing electrical equipment for railway applications domestically. The name Toyo Denki Seizo (meaning “Eastern Electrical Appliance Manufacturing”) reflects our founding ambition to contribute to the development of the nation by exporting products across Asia, not just within Japan.
This spirit has been passed down through generations of employees, leading to the creation of numerous products which were the first of their kind in the world or in Japan. Going forward, we will continue to support the advancement of global social and industrial infrastructure systems under the banner of “Technology Toyo.”
- 1918
- Established as Japan’s first manufacturer of electrical equipment for automobiles
Kaichi Watanabe, our first president
- 1919
- Yokohama Factory begins operations
Yokohama Factory at the time of our founding
- 1920
- Start of domestic production of electric equipment for automobiles
Delivered the Company’s first direct controller and traction motor to Keihan Electric Railway Co., Ltd.
- 1921
- Completion of Japan’s first domestic pantograph
- 1926
- Expansion industrial electrical equipment
Started production of three-phase AC commutator motors (Schrage motors, later AS motors)
- 1935
- Established Toyo Denki Youth School (predecessor institution to the present-day Technical Training Center※) The Company’s internal education and training organization
- 1960
- Received an order for an electric towing locomotive for the Panama Canal
- 1963
- Completed Japan's first thyristor static Leonard equipment for newspaper rotary presses
Expanded sales channels to include newspaper rotary presses, printing equipment, papermaking equipment, and steel production equipment
Delivered electrical equipment (pantograph, main motor, driving gear unit) for Shinkansen
- 1966
- Launched ticket vending machines
- 1985
- Practical application of VVVF inverter controllers for railway vehicle propulsion
- 1997
- Delivered electrical equipment for shaft-less newspaper rotary presses for color printing
- 1998
- Delivered VVVF inverters and other electrical equipment for Beijing subway trains (Fuba Line), the first delivery of its kind from Japan
- 2012
- Received an order for electronic equipment for LRVs for the Los Angeles County Metropolitan Transportation Authority (U.S.A.)
- 2018
- 100th anniversary of the founding of Toyo Denki Seizo
- 2022
- Delivered testing systems for automobiles using In-Tyre-House Dynamo
First installation of a remote monitoring system on VVVF equipment for Aichi Rapid Transit Co., Ltd.
- 2023
- Received an order for electrical equipment for new commuter train cars in Indonesia
- Today
In Japanese only
(Created in 2018, which marked the 100th anniversary of our founding)
- About Us
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