Company brochure

Pioneerig of New Technologies.

Message from the president
Our company was established in 1946 as the only transformer manufacturer in the
Shikoku region. Starting with the repair of pole transformers, we have built a historyof over 70 years of contribution and service to society through the supply of electric
power equipment.
We are with "serving through creation" as our corporate philosophy , we are striving
to further improve our technology.And our company motto of building strong andlasting relationships of trust with our stakeholders, based on the spirit of cooperationand harmony expressed in our corporate motto of "Respect, Aﬀection and Reliance" isalive and well in our long history and tradition.

Today, we have earned the trust and high reputation of our customers bymeeting their various needs with our diﬀerent technologies, such as electric
power equipment that contributes to the stable supply of electric energy, power
supply equipment that is indispensable for semiconductor manufacturing
equipment and oﬃce equipment, precision molds that realize advanced press
work, and electric water heaters that provide comfortable living.
In the 2020s, the demand for decarbonization increased due to the deterioration of the global environment such as
rapid global warming.And the environment surrounding companies are changing rapidly due to drastic changes inlifestyles and work styles.
In response to these changes in the business environment, there is a strong need for companies to take action on
ESG management (Environmental, Social and Governance) and SDGs (Sustainable Development Goals).
Our company is based on pursuing further improvement of energy eﬃciency of conventional electric power
equipment,electric power equipment for oﬀshore wind farming power generation, which is attracting attention as apromising renewable energy,transformers that use vegetable oil that is harmless to the soil as insulating oil,power
supply for deep uv led sterilizers that contribute to ensuring safe drinking wate,we will create new value with our
specialty technologies.
We appreciate your continuous support and advice.

Corporate philosophy

Serving through creation
Shihen Technical Corporation serves society
with creativity and ventures into the path of true
prosperity and endless happiness through thisservice.

Company motto

Respect, Aﬀection and Reliance
The company cultivates relationships connectedby respect, aﬀection, and reliance to work together
with society and grow and develop with local
communities.

President
Tadashi Kojima

1

Photo: Mt. Iino(Fuji of Sanuki)

2

History of productsee
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Precision dies

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Since we started repair business for Pole-mounted transformer in 1946,
we have combined new technologies with the technology we havecultivated in transformers to create new business areas such as switchgear,
electronic equipment, precision dies, and electric water heaters we arecultivating.

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High wattage industrial power supply
New type of DC power supply

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Pressed products
Automated machine

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Commercial IH cooking heater

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Resin moldPower conditioner for photovoltaic generation

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Drawing dies

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Conveyance diesHigh voltage power supply (PSH)

plyElectronic ballast for neon light

Switching power supply

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ting

Ligh

Balance reactor
Mold transformer

Amorphous-core transformerersformWater cooled transformer

Dry-type transformer

Switchgear and contorol panel

On-load tap-changing transformer

Heat pump water heaters

Electric
water heater

Pole-mounted transformer

eater
water hElectric

Cubicle type high voltage
power receiving facility

Instrument transformer

Microcomputer control typeelectric water heaters(CO2)

Compact type switchgear

Compact type receiving
and transforming facility
LAN type monitoring
control system switchgear

High voltage switchgear

itchgearming facility・Sw Petersen coil control paneltransforReceiving and

The ﬁrst shipment transformer of this company. (1947)

Digital controlled
monitoring control
systemThe shipment of the ﬁrst product in 1946.
A pole transformer burned in the war was repaired.

1940s
August 31, 1946
・Foundation of
Shikoku Transformer
Co., Ltd.
October1, 1988
・Start of the operation
at the site of thecurrent head oﬃce
・Capital fund 170,000
yen

3Electric water heater

CO2 Heat pump water heaters
with two connected tanks
Automated bath-ﬁllingelectric water heaters

Power transformer

ersed
Oil-imm ormer
transfLarge-capacity transformer
to be transported in acompleted state

Mobile substation

Marine transformernpe traDry-tySince 1946

Oil-immersed transformer

Large capacity dc reactor

Vegetable oil (ester oil)-immersed transformer

Ballast for neon light

Magnetic type ballast for ﬂuorescent light

Dry-type transformer

Power supply for LED lighting

Electronic ballast for ﬂuorescent light(Electronic ballast）

DC stabilizing power supply (dropper type)ve

Po stewdte er c te
ch on
no ve chlog rs noy ion loI

Power supply for lighting

Digital controled power supply for LED lighting

Power supply for printers

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Development of customized for oﬃce equipment,
vending machines,for change machines.

Development of various custom power supplies for
medical equipment, ships, mobile communicationand industrial robots etc.

Uninterruptible
power supplygies

Punching dies

Small wattage embedded power supply

Power supply for microwave generator

1950s

1960s
・Construction of aPrecision equipment
factory・Construction of
Takase Plant

1970s

1980s

・Construction of a・Launch of Tokyo
Switchgear factoryOﬃce
・Establishment of Chunan
Business institude Corp. August 31, 1988
・Construction of a large
・Company name wastransformer factorychanged to Shihen
Technical Corporation.
・Capital fund: 318.5
million yen
・Establishment of
Toyonaka Seisakusyo
Corp. /Construction of
Minato Plant
・Construction of Dry-type
tansformer factory

Digital controlled
monitoring controlpanel

1990s

2000s

・Construction of a
new Electric devices
factory.
・Establishment of
SHIHEN (THAILAND)
Co., Ltd.
・Construction of astandard transformer
factory.
・Acquisition of ISO
9001 for thetransformer division.

・Expansion of the range ofISO certiﬁcate to the
Switchgear and Water
heater department.
・Acquisition of ISO 9001 forthe Electric devices division.
・Acquisition of lSO 14001
・Constraction of Precision
Equipment Minato Plant
・Establishment of SHIHEN
VIETNAM Co., Ltd.

2010s
・Acquisition of ISO 9001 for thePrecision quipment division
・Moved the Precision Equipment
and Water Heater Division to the
Takase Plant
・Construction of a new oﬃce
buildingat the head oﬃce
・Launch of Chugoku serviceoﬃce(Fukuyama)
・Establishment of Shihen Precision
Machinery (Dongguan), Ltd.
・Environmental ISO certiﬁcation
scope expanded to adjacentaﬃliated companies
・Launch of Kanto service oﬃce
(Sagamihara-shi)
・Launch of Kansai service oﬃce
(Amagasaki-shi)

4

Range of business

Shihen Technical Corporation is working on ﬁve businessthat the company has accumulated in its history.

domains based on “technologies to ensure stable power supply”

Used for converting and controlling electricity at substations, utility poles, and factories
Transformer for
power distribution substation

Distributes, controls, and protects
electricity at substations, factories
and oﬃces

Built-in power supply supports stable
operation of oﬃce appliances, LED
lights, and industrial machinery.

High eﬃciency typeoil-immersed transformer
Dry-type transformer

Power supply for industrial label printers

Outdoor 22 kV closed switchgear

Digital controlled
monitoring control system

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Substation
monitoring LAN
systemCurrent limiting reactor

Tr a n s f ormer, Reactor

We produce new “Shihen Value”
while eﬀectively us ing technologies
athat the comp any now has.
Pre

cisio
n dies5Power supply for LED ceiling lights(For domestic uses)

Power supply for vending machines

Power supply for AC adapter

Delivers hot water to any places including
at home, stores, and oﬃces

Small type electric water heater(For kitchen)

Single diesElectric water heater[Square type]
Automated machinery, hydraulic pressing machinePower supply for LED downlights

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Electric

Shihen Technical Corporation is also
producing dies which are essential tool ofmanufacturing and metal processing using
the dies.

High-speed terminal diesPowpurper supose plysatindus rial
for lightingnd

Digital controlled switchgear

Mobile substation

Pole-mounted
transformer

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Power supply for printers

Pressed product

Electric water heater(Round type)Heat pump water heaters
with two connected tanks

Natural refrigerant heat pumpwater heaters（CO2）6Technologies of transformers
and reactors

Provides high quality electric energy in a stablesupply using transformers and reactors.

The integrated production system covering from the design
and production to the installation of cubicles and distribution
boards supports the development of the industry.

Technologies of switchgears
and control panels

Digital control and protection panel

66kV class oil-immersed transformer

66kV distribution substation (Installed at Shikoku Electric Power Company , Incorporated )【Standard customized design and technology for top-runner】● Large-capacity oil-immersed transformers, mold transformers, and type-H dry transformers have the【33 kV insulation technology】

We can design and produce substation equipment used for 33 kV extra-high tension circuit.

same level of eﬃciency as top-runner transformers.
● We can design transformers with the highest eﬃciency for the expected equivalent load of transformers

that our clients use.

● We realize smaller space using fewer wires by integrating the distribution substation monitoring

and control system within LAN.

【Technologies to design transformers for thyristors and inverters】● We improve the eﬃciency of operation and maintenance using network communication and● We design and produce thyristor transformers such as bridge connection

software technologies.

and double star connection as the power supply for rectiﬁers.

● We also have technologies to design and manufacturer output transform【Reduced size of distribution substation】

ers for multiplex inverters for reducing high-frequency wave interference
and transformers for IGBT converters of large variable-speed systems.

■Support system【LAN-type monitoring and control system for distribution substation】

We enable the installation of a distribution substation (one bank) within the premise of a transmission tower(about 260 m2) connected to 66 kV distribution lines using compact transformers and cubicles as well asaluminum case type control panel.

Forced-oil water-cooled transformer
for thyristor.

【Support system for transformers and switchgear】
We quickly respond to problems to ensure a stablesupply of electricity.

66kV transmission tower

7

Installation of transformer

Repair of switchgear

A substation within the premise of a transmission tower

8

Technologies of power supply forindustrial purposes and lighting

We support our customers with a variety of
inverter technologies.

We produce advanced pressing dies for which highprecision is required using solid technologies and theskills of expert workers.

Technologies of precision dies

■Electronic circuit design and veriﬁcation techniques
We can make the best design using circuit simulation software, thermal simulation, radio wave shielded room, etc.
Circuit simulation software

Thermal simulation software

Dies assemblyRadio wave shielded room

Example of processed product■ Progressive press dies technology
Measurable test items● Conducted Emission● Radiated noise electromagnetic
ﬁeld strength● Noise-power【DC stabilizing power supply】● We can design and produce power supplies for various

purposes. We provide optimal design and manufacturing
for electric circuits and transformers.
● This product is designed with energy conservation
design to reduce power consumption during stand-by.
● We have acquired safety certiﬁcates from countries
around the world to respond to global needs.

The progressive dies has extra value that improves processing speed, reduces power consumption in
post-processing, and improves yields.

【Two-material parallel-feed composite dies】
This dies enables integrated processing of cutting, shifting, inserting, and punching by injecting two diﬀerent
types of materials at diﬀerent feed speeds. Only mechanical structure is necessary for this processing, whichenables the processing speed of 700 strokes/minute.
Progressive processing

Processed productMaterials【Power supply for LED lighting】● We enable reduced cost and smaller size withadvanced designs created by fusing the DC stabilizing
power supply technologies and electric ballast
technologies.
● We have acquired safety certiﬁcates of many countries
for highly reliable and safe designs (protection fromoverload, overcurrent, and overheating).

【Dies with simultaneous injection of one coil and forming of two-roll terminals】

This dies enables both improved yield and high productivity by simultaneously forming two lines of dies facing
each other using one material.
Progressive processing【Inverter application technology】

Simultaneous production of
two product rolls

Materials

We realize high conversion eﬃciency using the latest
circuit topology (method).

Inverter control board【Multi-process integrated dies】

This is an dies is an integration of multiple processes such as parallel feed, progressive processing, bonding, andpunching using two diﬀerent types of materials (with a material feed system).

【Technology of microcomputer application system】● We use advanced system design technologies tooptimize circuit and software designs.

Progressive processing● Production can be selected for diﬀerent purposes

ranging from cost eﬀective microcomputers to
performance-oriented high-power devices.

Processed productMaterials

Microcomputer and FPGA
control board

910

Technologies ofelectric water heater

The electrically heated safe, clean, andeconomic hot water provides comfortable lives.

■ Clean and eﬃcient integrated production line

Constantly challenge for
new technologies and new ﬁelds.

Cultivation of new businesses andtechnological development■ Cultivation of new businesses

We are conducting high eﬃcient production using the knowhow based on long-years of experience to ensurestable production of low price and high quality products which satisfy our customers.

We are constantly cultivating new businesses to achieve sustainable growth and development and to contributeto stakeholders and local communities.

■ Technological development【High power microwave generator】*The photograph is a 1.5 kW product.
This is a microwave generator produced by integrating inverter, high-speed digital control, and digital network
technologies used on vacuum plasma processes in semiconductor factories.
Exterior processing

Assembly line

Movement test

■Design and production of customized products【Downstairs water heating system】

This system provides hot water to downstairs by improving the strength of the tanks rather than improving air
valves that have the risk of damage when a water heater supplies hot water to downstairs.

High-voltage power unit

Microwave oscillator【Warming system】“Warming system to circulate hot water inside pipes,” which is an applied version of water warmer for facilities with long hot
water pipes such as hotels.

【Connected system combined with household heat pump water heaters】“Heat pump water heaters with two connected tanks” produced by connecting two
household heat pump water heaters to supply large amount of hot water at low costfor facilities such as barbers which use more hot water than households.

Heat pump water heaters withtwo connected tanks【Industrial large-capacity direct and parallel water heating system】
Multiple electric water heaters are directly connected to enable water heating formany hours for large facilities such as hospitals.
Parallel connection of water heaters enables instantaneous water heating for a large
volume of water for facilities such as public baths.

Microwave detector

Quality is the most important factor for gaining
the trust of customers.

Quality management

Speciﬁc and proper quality management is required for transformers, switchgears, industrial power supplies,
water heaters and dies.
Experts in quality management are closely observing the production in each process to conﬁdently.

■ Registration of ISO9001
We have acquired certiﬁcation of ISO9001 in
three businesses.

Parallel-connection water heating system
for industrial uses

Electric power equipment･Transformer･Switchgear･Electric water heater■Pursuit of high quality
We are developing products with high eﬃciency and long service lives using ourknowhow and repeated testing using latest facilities to enable high eﬃciency anddurability under various environmental conditions such as ambient temperature andwater quality.

Electric devices･Industrial power supply･Power supply for lighting

Precision dies
Environmental durability test using a
constant temperature room

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Electronic substrate
movement test

Switchgear movement test

･Precision dies・Pressed product12Eﬀorts for management

We promote ESG management in order

We are promoting ESG management（Environmental, Socialand, Governance）
in order to protect the global environment and fulﬁll our social responsibilities
to stakes holders.

to continue to serve society through creativity.
■ Social support ／ Supporting the growth of a sustainable society■ Environmental activities ／ Environmental conservation activities
Since acquiring the environmental ISO14001 certiﬁcation in 2005, we have evaluatedthe impact of manufacturing on the environment and have been working to reduce it.
In the future, we will further promote this and promote the reduction of waste and thesophistication of sorting with the aim of zero mission (zero landﬁll)
Ensure sustainable consumption

Since 1971, the 25th anniversary of our founding, we have changed our corporate motto from
"Quality service" to "Serving through creation" and have taken on the challenge of "Serving society
through creation" and are continuing to work on it.
In response to the increasing sophistication of international initiatives
such as the SDGs, we are actively working to reduce our carbon footprint
and address human rights.
【Power equipment for oﬀshore wind farming power plant】
With the realization of carbon neutrality in 2050,
the need for renewable energy is becoming more
and more active, and oﬀshore wind farming power
plants are especially expected.
We have been involved in a large number oftransformers and control panels for solar power
plants, but we are actively working on thedevelopment of electric power equipment for
renewable energy such as oﬀshore wind farming
power plant.

and production patterns.

【 Registration of ISO14001】
Not only our company but also the entire factory including aﬃliated companies(Shikoku Kosho Co., Ltd. and Yoshino Denki kogyo Corporation) involved in our
manufacturing process are working to reduce the environmental load.

【Transformer using
readily biodegradable insulating oils】【Power supply for deep UV LED】

Compact power supply unit capable of lighting
long-life, mercury-free deep ultraviolet LEDs
with low power consumption to replace
conventional ultraviolet lamps for water.

A transformer that uses naturalester vegetable oil (rapeseed oil)and plant-derived ester (palmpalm oil) as insulation. Even if itleaks into the soil, it will bequickly decomposed by
microorganisms.

Transformers manufactured
according to Japanese higheﬃciency standards.

【Interaction with local residents】

7.3 Double the global rate of
improvement in energy
eﬃciency.

We participate in various activities in the area and deepen exchanges with local residents.

15.3 Striveto achieve a landdegradation-neutral world【High eﬃciency type transformer】

Image of Oﬀshore wind farming power plant

6.3 Improve water quality
by reducing pollution【High eﬃciency type water heater】
We are developing CO₂ heat pumpwater heater.

Participation in Tadotsu Festival

Invite local elementary school students toa factory tour.

We will explain to them in detail how electricity works.

■ Governance ／ Aiming for sound corporate management
7.3 Double the global rate of improvement
in energy eﬃciency.

7.3 Double the global rate of improvement
in energy eﬃciency.

●●

Volunteering in tree-planting

13

Volunteering in beach cleanup

Participation in city park clean-up●

Recognizing the importance of gaining the trust of society, we strive to strengthen corporate
governance based on the companies act (and enforcement regulations) in order to carry out legal,
appropriate and eﬃcient business activities.
Regarding the work below the president supervision by the board of directors,audit by audit andsupervisory board members and by setting up an internal audit department governance wemaintain the soundness of management.
Addition to establishing our code of conduct and compliance guide, we have established
a compliance promotion committee and a consultation desk to promote compliance inmanagement.

Based on the CSR activity policies of the parent company Shikoku Electric Power Company,
Incorporated and DAIHEN Corporation we are also engaged in CSR activities.
14

Domestic bases

We have constructed factories near the head oﬃce for eﬃcient operation.
Contact via Email■ Domestic service oﬃces and plants
Head oﬃce / Tadotsu plant

Produced product category: Transformer, Switchgear,
Power supply for industrial purposes and lighting

Head oﬃce area map

Telephone service hour

Weekdays, 9:00 a.m. to 5:00 p.m.
(not available on weekends and holidays)

To Okayama

Seto Inland Sea
1-97 Sakuragawa 2-chome, Tadotsu-cho,
Nakatado-gun, Kagawa 764-8507
TEL: +81-877-33-1212 (main line)
Produced product category:Transformer, Switchgear

Kojima IC

Transformer Minato Plant,
Precision Equipment Minato Plant

Electric power equipment business
unit sales dept.
enterprise sales section #1
TEL: +81-877-33-2525
FAX:+81-877-56-6067

JR Tadotsu Station

Electronics products business unit
sales dept. sales section
TEL: +81-877-33-2323
FAX:+81-877-33-0775

Seto Ohashi Bridge● Approximately 10 min by carfrom Zentsuji IC

Takamatsu business oﬃce

( Head oﬃce /Tadotsu plant)

Sakaide-kita IC
Sakaide IC

Takase Plant

Sakaide JCT
Zentsuji IC

Mitoyo-Tossaka
oyoIC

JR Takamatsu Sta.

To Tokushima

Takamatsu-chuo IC
Takamatsu-nishi IC

To Tokushima

Takamatsu-higashi IC

Takamatsu expressway

Sanuki-Toyonaka
IC
To
To MatsuyamamaProduced product category:
Power supply for industrial purposes andlighting

Shihen Tech (Head oﬃce and Tadotsu plant)

inquiry@shihen.co.jp

me
To Ehime,Kochi

Takase Plant

Produced product category:Precision dies, Electric water heater

To KochiTakamatsu airport

Weekdays, 9:00 a.m. to 5:00 p.m.

Telephone service hour (not available on weekends and holidays)
200-1, hiji,Takase-cho, Mitoyo-shi, Kagawa 767-0004
TEL: +81-875-72-4111 (main line)
Precision dies：
Precision equipment division and sales division
TEL: +81-875-72-4111FAX:+81-875-72-4110■ Sales oﬃces

7F, Eagle Hamamatsu-cho Building, 2-7-17
Hamamatsucho, Minato-ku, Tokyo 105-0013
TEL: +81-3-3578-1641 FAX: +81-3-3578-1645
Toei Asakusa Line

A-10

Takamatsu
business oﬃce

Toei Mita Lline
A-09
E-20

Produced product category:transformer, switchgear
Switchgear
Transformer,

I-05
A-08

JY29

Toei
Oedo Line

Kanto
service oﬃce

Produced product category:Heat pump water heaters and electric water heater

Nature of business：
Repairing a pole-mounted transformers

E-19

To
k
m yo
on
or

ai
l

Tokyo business Oﬃce

15

30 Nishiminatomachi, Tadotsu-cho, Nakatado-gun, Kagawa
764-0017
TEL: +81-877-33-1212 (Head oﬃce)

JY28
E-21

Kansaiservice oﬃce

Transformer Minato Plant

JR Yamanote Line

(Head oﬃce / Tadotsu plant)

Chugoku
service oﬃce

Electric water heater：
Water heater department, sales department
TEL: +81-875-72-4300 FAX:+81-875-72-4302

Tokyo business oﬃce Produced product category:Transformer, Switchgear

JY-28 (Hamamatsucho Station) of the JR Yamanote Line
3 minute walk from the South Exit (Kanasugibashi Exit)
E-20 of Toei Oedo Line / A-19 Asakusa Line (Daimon Station)
4 minute walk from A1 Exit
I-05 (Shiba Koen Station) of Toei Mita Line
5 minute walk from A3 Exit
Along the Daiichi Keihan Road

Precision Equipment Minato Plant
16-13 Nishiminatomachi, Tadotsu-cho, Nakatado-gun,
Kagawa, 764-0017
TEL: +81-875-72-4111 (Takase Plant)
Nature of business：
Pressing and assembly of parts

16

Shihen Tech GroupWe are supplying low-cost and high quality parts andservice in quick operations with our unique technologies.

Overseas plants are based on advanced quality and costeﬀectiveness and venturing into the giant asian market.

Overseas bases

Subsidies
SHIHEN（THAILAND）CO., LTD.

■ Shikoku Kosho Co., Ltd.
1-82 Sakuragawa 2-chome, Tadotsu-cho, Nakatado-gun, Kagawa 764-0012
TEL: +81-877-32-2653 FAX: +81-877-32-2681
Nature of business/● Switchgear(design and assembly) ● Mechanical assembly● Design and assembly of FA devices

Production category:● Power supply for LED lighting ● Switching power supply● Inverter transformer
Introduction of the company:
Since the company opened in 1996 as the ﬁrst overseas plant of
Shihen Technical Corporation, this company has accumulated
production technologies for the long term and supplying highquality products in a stable supply.

■ TADOTSU UNSO Corporation■ Sone Kougyo Corporation

1-97 Sakuragawa 2-chome, Tadotsu-cho, Nakatado-gun, Kagawa 764-0012
TEL: +81-877-33-4001 FAX:+81-877-33-3629
Nature of business/● Transportation of vehicles in general cargos● Collection and transportation of industrial wastes● Delivery, installation, and dismantling of transformers and switchgear

527 Moo2,Klongjig,Bang Pa-in,Ayutthaya,13160,Thailand
TEL +66-35-352591 FAX +66-35-352594
URL： http://www.shihen.co.th/

Lot 2-TS7,Tien Son IZ.,Tu Son City, Bac Ninh Province, Vietnam
TEL +84-222-3734-246 FAX +84-222-3734-249

SHIHEN VIETNAM Co., Ltd.

769 Hijidai, Toyonaka-cho, Mitoyo-shi, Kagawa 769-1501
TEL: +81-875-62-2327 FAX:+81-875-62-2214
Nature of business/● Pressing and Assembly

Production category:● Power supply for LED lighting● Switching power supply
Introduction of the company:
Since the establishment in 2007, Shihen Vietnam has been
implementing production activities as the second overseas plantof Shihen Technical Corporation. And they are producing low
cost and high quality products in a stable supply.

Aﬃliated companies■ YOSHINO DENKI KOGYO Co., Ltd.
1-74 Sakuragawa 2-chome, Tadotsu-cho, Nakatado-gun, Kagawa 764-0012
TEL: +81-877-32-3049 FAX: +81-877-32-3040
Nature of business/● Winding and assembly of mid-to-small-size transformers● Maintenance of electric equipment including installation and adjustments■ Minami Electric Co., Ltd.

SHIHEN Precision Mold Trade（Dongguan）Co.,Ltd.

Room 610, Mingdian Building, No. 118 Changzhong Road, ChangʼanTown, Dongguan City, Guangdong Province, China
TEL +86-769-8702-9980 FAX +86-769-8258-5935
Nature of business:● Purchasing and sales of pressed dies and resin mold
● Purchasing and sales of dies of parts
Introduction of the company:
Founded in 2013.
The company is based in guangdong province, where there aremany automobile manufacturers and a large market for molds.

15 Nishiminatomachi, Tadotsu-cho, Nakatado-gun, Kagawa 764-0017
TEL: +81-877-33-4224 FAX: +81-877-32-7286
Nature of business/● Production of transformer cases and sheet metal processing● Product painting■ Shikoku Tosou Corporation
1-40 Sakuragawa 2-chome, Tadotsu-cho, Nakatado-gun, Kagawa 764-0012
TEL: /FAX: +81-877-32-3746
Nature of business/● Painting of transformers and switchgear■ Tadotsu Chuzo tekkosho Corporation
5-79 Kitagamo 3-chome, Tadotsu-cho, Nakatado-gun, Kagawa 764-0022
TEL: +81-877-33-2244 FAX: +81-877-33-4282
Nature of business/● Sheet metal processing and assembly● Pressing and assembly

SHIHEN VIETNAMSHIHEN Precision Mold Trade
SHIHEN(THAILAND）

17

18

P ro f ile

As of July 1, 2024

■Overview of the company
Company name
Address of the head oﬃce
Establishment
Nature of business

Shihen Technical Corporation
1-97 Sakuragawa 2-chome, Tadotsu-cho, Nakatado-gun, Kagawa
August 31, 1946

Capital fundEnd of ﬁscal year
Banks
Number of employees
Lot space
Building

318.5 million yen
End of March (once a year)
Chugoku Bank, The Hyakujushi Bank, MUFG Bank, Mizuho Bank and The Iyo Bank
471
121,223㎡
48,236㎡

Main operations include the production, repair, sales/purchase, andimport/export of transformers, other electric machinery and equipment,
mechanical equipment in general as well as design and contracting ofelectrica constructions. Freight forwarding business. Generation and saleof electricity from renewable energy sources.

Permission for speciﬁed construction business#3641, permitted by the governor of Kagawa (Special-3)
Permission number
November 28, 2021 (valid until November 27, 2026)
Date of the permission
Type of construction business Electric work
Registration, etc.
Electric construction work
(general purpose, electric construction for in-house uses)

Governor of Kagawa registration #13010

Type I cargo transportation work

Shikoku Transportation
Bureau Shikoku Transportation Cargo #343

Electric heating device manufacturing work

Director of Shikoku Economy and Industry Bureau

AC electric machinery and equipment
production work

Director of Shikoku Economy and Industry Bureau■Board members
Tadashi Kojima, President and Chief executive oﬃcer
Shingo Wada, Senior Managing director and Representative executive oﬃcer
Hiromasa Matsumoto, Senior Managing director
Katsuhiko Fujiwara, Senior Managing director
Katsuyuki Matsubo, Managing director
Takeshi Yamamoto, Managing director
Hiroshi Takai, Director
Satoshi Hayashi, Director

Yuji Katayama, Director
Yasutaka Okada, Director
Kazuo Kamo, Director
Seiji Miyazaki, Director
Kazuki Kondo, Director
Ryoji Yukimoto, Auditor
Ichiro Tokai, Auditor■Ratio of sales by equipment
Electric water heater
Precision dies and pressed parts

Power supply for industrial
purposes and lighting

FY 2023

Total 15.9 billion yen

Switchgear

Transformer and reactor

70% RECYCLED PAPER

Published April 2021