“Let`s work for the improvement and betterment of society”

President and Representative Director Katsumasa YamaguchiPresident and Representative Director Katsumasa Yamaguchi

In 1955, at the age of 50 our founder “SHIRO ODA” has decided to develop small hydro power that would help revitalize rural areas to enhance the power shortage and food production.

With his founding spirit in our mind, we have been involved in hydro power site surveys and construction with our own legs and have contributed to the economic re-construction of many rural areas, mainly in and around HIROSHIMA region.

Over 70 years since then, our work contribution aims to “Lighting electricity with economic revival” and “Protecting the global environment with renewable energy”. Even though the purpose changes, the love of water and the spirit of our founder in contributing to the society remains unchanged in each and every EAML soul.

The “VISION 80” long-term management plan launched in fiscal 2018, aims to further enhance corporate value. “Product value”, “Asset value and Capital value”, “Sustainability value” as a pillar, “Employee satisfaction and happiness, better products and services for customers, growth with partner companies, furthermore the development of the region and society” as our goal, we will work hard to achieve it.

“We will continue to work for the improvement and betterment of society”

We, EAML are working together to build a rich and prosperous society. We look forward for your continued guidance and encouragement.

Company overview

EAML Engineering CO.,LTD.

Katsumasa Yamaguchi
August 21, 1947
50 million yen
Number of Employees
115 (as of April 1, 2024)
Head office
10852-1 Hara, Hachihonmatsu-cho,Higashihiroshima City, Hiroshima Prefecture739-0151. Japan
Phone : +81-82-429-2100 (mainline)
FAX : +81-82-429-0614
site area : 26,344 m²
building : 7,790 m²
Major shareholder
The Chugoku Electric Power Co.,Inc.
Main customers
Electric power companies
Agricultural cooperative associations
Enterprise bureaus of prefectural governments
Land improvement districts
Municipal governments
Heavy electrical equipment manufacturers
private companies


EAML Company Limited founded with capital of 150,000 yen
Company name changed to EAML Engineering Company Limited
Head office relocated to Mainamitakeya-cho, Hirosima City
Capital 8 million yen
Hachihonmatsu plant completed
Head office relocated to Tanna-cho, Hiroshima City
Capital 32 million yen
assembly plant/hydraulic power test laboratories constructed
Head office relocated to Hachihonmatsu-cho,HigashihiroshimaCity
Finishing plant/electric test laboratories constructed
Automated warehouse constructed
50th anniversary of founding marked
Capital 50 million yen
Installation of solar power generation equipment(20 kw)
Submersible turbine generator license obtained
ISO 9001 certification acquired
ISO 14001 certificationacquired
Machinery production plant constructed
New main plant completed. Installation of solar power generation equipment(100 kw)
The 70th-anniversary year of the company’s founding
The 75th-anniversary year of the company’s founding

Corporate philosophy

With our commitment to water, we harness its unlimited energy to help protect the precious global environment and build a prosperous society.

We contribute to the development of local communities with our technologies to create electric energy by effectively utilizing small-scale water resources.

Guiding principles

We continuously make improvements and innovations for the benefit of our customers.


We ensure customersatisfaction with wholehearted, market-oriented services .


we make improvements and innovations based on inventiveness and multimedia technologies.


we ensure quality and cost effectiveness through commitment to our work.


All employees work in harmony and respect each other.

Quality Policy
Environmental Policy
Basic Procurement Policy
General Employer Action Plan

Quality Policy

Policy and Guidelines for Action
  • (1)While keeping our unbridled passion for manufacturing, we are committed to delivering products and services that provide value to our customers.
  • (2)We are aware of the immense social responsibility associated with our products and services and vow to conduct our business based on reliable procedures.

Environmental Policy

Policy and Guidelines for Action
  • (1)We contribute to carbon neutrality by providing products and services related to the production of CO2-free electricity.
  • (2)We want to help build a sustainable society by promoting environmentally friendly products and the three R’s of waste management.

Basic Procurement Policy

We shall perform procurement work* according to the following basic policy.
*This includes the procurement of materials/parts, outsourced design, outsourced processing, outsourced construction work, packing/transportation, and the calibration of measuring instruments.

1. Building Solid Partnerships

We endeavor to build and maintain mutual understanding and relationships of trust with our suppliers so that we can grow together as business partners.

2. Compliance with Laws and Social Norms

We will always comply with applicable laws and regulations (such as laws related to antitrust, subcontracting, construction, personal information protection, labor, and the environment), strive to follow established social norms, and carry out our business in good faith. We shall also request our suppliers to do the same when applicable.

3. Emphasis on Quality, Timely Delivery, and Stable Supply

In order to provide products and services that fully satisfy our customers’ high expectations, we place great importance on quality, timely delivery, and stable supply. For this reason, we only select suppliers who can guarantee strict compliance with the specified quality and delivery date. In addition to considering factors such as cost, we also ensure that they are capable of stable supply in a fair and impartial manner.

4. Efforts for Continual Improvement

We are constantly implementing new initiatives such as mechanical improvements and better technology that can lead to higher efficiency and reduced costs. We also request that our suppliers implement similar initiatives.

5. Environmental Protection

While adopting environmentally-friendly materials and mechanisms, we strive to reduce pollution and deliver products that earn the trust of our customers and the wider community. We also request that our suppliers conduct business while considering their impact on the environment.

6. Ensuring Health and Safety

We are committed to conducting business in a manner that ensures the health and safety of all employees of our company and our suppliers. We also request that our suppliers put the health and safety of employees above all else when conducting business.

7. Thorough Management of Information

We strive to appropriately manage all information collected in the course of conducting business. This includes confidential customer information and the personal information of our employees. We also implement other information security measures such as the prevention of unauthorized access to our servers. We mandate that all suppliers who handle information provided by our company implement appropriate information management and security measures.

8. Elimination of Antisocial Forces

We will not do any business with companies related to antisocial forces such as organized crime. We also urge our suppliers to act in a similar manner.


EAML Engineering CO.,LTD.
Action plan for general business owners

EAML Engineering CO.,LTD.

Planning period 2022/4/1〜2025/3/31
Percentage of female workers
The percentage of female workers who joined the company in the last three years is 17.6%. However, no female workers have been hired since FY2020.
The number of female workers is expected to fall in the future as the company will focus on hiring technical staff.
The percentage of female workers to be hired as regular employees between April 2, 2022 and April 1, 2025 must be at least 20%.
(This does not include those who will join the company on April 1, 2022 since they have already been offered a position.)
Measures to be implemented Implementation period
■ Using the website and other platforms to post information on how female employees (especially technical staff) work At any time during the period
■ Promoting internships for women At any time during the period
■ Creating a female-friendly workplace At any time during the period

Factory introduction
(Equipment introduction)

  • The first factoryThe first factory

    It is mainly factory of water wheel, inlet valve assembly and inspection. We will also accept products, ship out and inspect the control panel.In addition, we installed a 100 kW solar power generation facility on the roof of this factory and contribute to the generation of renewable energy.

  • The third factoryThe third factory

    It is a factory mainly equipped with large machining centers such as 5-sided processing machine, multiple lathe, vertical lathe, machining center, 2-story large overhead crane. Also, assemble and inspect a large water turbine and inlet valve.

  • Hydraulic power test laboratoryHydraulic power test laboratory

    In developing the performance of water, wheels and runners, Hydraulic power test laboratory is a dedicated facility to operate the same model turbine as the actual turbine and verify the validity of the design performance of the turbine.

Organizational chart

Organizational chart