We develop, production, and deliver electrical components
for construction machinery, heavy machinery, etc..

We have 5 factories:

  • The mother factory in Japan (Komatsu City, Ishikawa Prefecture) that is integrated with development base.
  • 4 Factories in Vietnam (Hanoi City, etc.) and China (Dalian City) that have production cost advantages.
  • These factories can smoothly transfer production to each other.
  • Through these efforts, we reduce the risk of natural disasters and epidemics and achieve a stable supply.

We introduce our values in detail below.

Values 1

Cost, quality, and delivery

We produce at 4 factories in Vietnam and China,
so production costs are low.
And these factories meet the quality standards of our mother factory in Japan.It is achieved by sharing data, parts, manufacturing equipment, etc.
Therefore, it is Japanese quality and reasonably priced.
The products we produce are delivered directly from those factories to around the world.

Values 2

High-mix low volume
is also possible

At our Japanese factory (Komatsu City, Ishikawa Prefecture), we have established the high-mix low volume production system.
We have about 6,500 types of parts in stock, including about 1,000 types of electric wires, mainly low-voltage electric wires for automobiles, captire cables and shielded wires, as well as materials, connectors, terminals, and exterior materials.

Values 3

We supply to major construction
machinery manufacturers

Our main products, wire harnesses and electrical components, are delivered to over 180 companies including major manufacturers.
We have built relationships of trust with manufacturers for over 30 years.This is the result of meeting the strict quality standards of major manufacturers.

Values 4

We can make technical proposals
from a variety of parts.

We source parts from over 250 routes.The number of parts registered in our production system is approximately 30,000.
Additionally, since we have our own development department, we are able to provide technical proposals that meet customer needs, such as reducing costs and improving quality.


Wire harness
(corrugated type )

Wire harness
(Woven braid type )

Wire harness
(floor type )

We also manufacture various types of wire harnesses and electrical components.
Please contact us for more information.

About us

Toa electric industory CO.,LTD.

We are a general electronics company headquartered in Kanazawa City, Ishikawa Prefecture, Japan.
Our production bases in three countries (5 factories) in East Asia.

P&D Division Product and development electric components of heavy equipment.

Development Department and Mother Factory: Komatsu City, Ishikawa Prefecture, Japan.
China factory (Dalian Dongya Electric Co., Ltd.): Dalian, China.
Vietnam Factory 1 (JTEC HANOI CO.,LTD.): Hanoi,Vietnam.
Vietnam Factory 2 (VTEC CO.,LTD.): Vinh Phuc, Vietnam.
Vietnam Factory 3 is under construction, production will start in 2024.
Number of employees in the division: approximately 200 in Japan, approximately 1,600 overseas (China/Vietnam)


P&D Center (Komatsu)

Country/Japan Address/5-3 Kokufudai, Komatsu-shi, Ishikawa 923-8520 Tel/0761-47-3340

Dalian Toya Electric Co.

The organization was established in December 2010 Country/People's Republic of China Domicile/No.1-1,Xinhui South Road,Dalian Tax-protected Zone,Dalian,China Phone number / +86 (411) 6677-1696


Company establishment/October 2007 Country/Socialist Republic of Viet Nam Address/P-14, Thang Long Industrial Park, Dong Anh District, Hanoi, Vietnam Phone/+84 (024) 3955-0209


Company establishment/December, 2017 Country / Socialist Republic of Vietnam Address/Hop Thinh Commune,Tam Duong District,Vinh Phuc Province,Vietnam

Please feel free to contact us if you have any questions or concerns regarding wiring harnesses or other electrical components for working cars.

Contact us by e-mail