PIONEERING NEW TECHNOLOGIES

Issued in July 2020

http：//www.shihen.co.jp/

Corporate Profile

Photo： 飯野山（讃岐富士）

After its establishment in 1946, Shihen Technical Corporation started the production of pole transformers as the only transformer manufacturer in Shikoku. Since then, the company has been contributing to and serving society by playing a role in supplying power with an established 70-year history as a company.

Shihen Technical Corporation is now pursuing the possibilities of new creativity and services based on five business domains, including electric power equipment such as transformers and distribution boards, assistance in the stable supply of electric power, electronic equipment to support customers with unique inverter technologies, electric water heaters to contribute to comfortable lives, and high-precision dies to realize advanced pressing. The company has been responding to the needs of customers and gaining strong trust and popularity from customers with these technologies.

The environment surrounding companies has been rapidly changing in the 21st century, such as exacerbating environmental problems, innovation of information and communication technologies, and the globalization of corporate activities. In addition, the concept of CSR (corporate social responsibility) is attracting attention in recent years, and society expects companies to act accordingly.

The administrative policy of Shihen Technical Corporation is to strive to further polish technologies under the company policy of serving through creation and to build permanent and strong trust with stakeholders in the spirit of cooperation and harmony connected with “respect, affection, and reliance” This policy is similar to the CSR activities that the company is now working on and embedded in the long history and tradition of the company.

Shihen Technical Corporation is also committed to thorough compliance and striving to reduce its environmental load by effectively operating an environmental management system and introducing energy efficient products that satisfy the need for energy conservation.

With the technologies and expertise that the company has developed so far, the company is aiming to establish a new Shihen brand. All the executives and employees are working together in earnest to respond to expectations. We appreciate your continuous support and advice.

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Corporate philosophy and corporate image to achieve

Shihen Technical Corporation plays a role in fulfilling the social mission of ensuring a stable power supply, and makes a continuous contribution for the development of industry and comfortable lives.

Serving through creationServing through creationShihen Technical Corporation serves society with creativity and ventures into the path of true prosperity and endless happiness through this service.

Shihen Technical Corporation serves society with creativity and ventures into the path of true prosperity and endless happiness through this service.

Respect, Affection, and RelianceRespect, Affection, and RelianceThe company cultivates relationships connected by respect, affection, and reliance to work together with society and grow and develop with local communities.

The company cultivates relationships connected by respect, affection, and reliance to work together with society and grow and develop with local communities.

The company quickly responds to changes in the business environment and implements global business while constantly suggesting the best solutions using various applied technologies based on technologies for the stable supply of power.

Tadashi Kojimapresident of Shihen Technical Corporation

1940s 1950s 1960s 1970s 1980s 1990s 2000s 2010s

Network technology

Receiving and transforming facility・Sw

itchgear

High-precision dies

Lighting d

evices

Dry-type transf

ormer

Digital controlled monitoring control system

Electric water heater

Industrial

power supply

Oil-immersed tran

sformer

Invested technologies

Power conversion

technology

System control

technology

Power electronics technologyMicrocomputer

technology

High-speed digital con

trol

technology

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Precision dies

High wattage industrial power supply

Small wattage embedded power supply

Power supply for lighting

Dry-type transformer

Oil-immersed transformer

Electric water heater

New type of DC power supply

Power conditioner for photovoltaic generation

Pressed products

High voltage power supply (PSH)

Uninterruptible power supply

Commercial IH cooking heater

Power supply for microwave generator

DC stabilizing power supply (dropper type)

Switching power supply

Power supply for printers

Development of customized power supplies for office equipment, medical equipment, vessels, mobile communication, vending machines, and industrial robots

Magnetic type ballast for fluorescent light

Ballast for neon light

Electronic ballast for fluorescent light

Electronic ballast for neon light

Power supply for LED lighting

Digital controled power supply for LED lighting

Instrument transformer

Pole-mounted transformer

Dry-type transformer

Water cooled transformer

Power transformer

On-load tap-changing transformer

Mold transformer

Marine transformer Amorphous-core transformerMobile substation

Punching dies

Drawing dies

Automated machine

Resin mold

Conveyance dies

Electricwater heater

Heat pump water heaters

Microcomputer control typeelectric water heaters

Automated bath-filling electric water heaters

Heat pump water heaters with two connected tanks

High voltage switchgear

Compact type switchgear

Petersen coil control panel

Cubicle type high voltagepower receiving facility

Compact type receiving and transforming facility

LAN type monitoring control system switchgear

Receiving and transforming facility・Switchgear

Receiving and transforming facilitywith the function to send maintenance information

Digital controlled monitoring control panel

・August 31, 1946・Foundation of Shikoku Transformer Co., Ltd.・October 1, 1946・Start of the operation at the site of the current head office ・Capital fund 170,000 yen

・Construction of a Precision equipment factory ・Construction of Takase Plant

・Construction of a Switchgear factory・Establishment of Chunan Business institude Corp.・Construction of a large transformer factory ・Capital fund: 318.5 million yen ・Establishment of Toyonaka Seisakusyo Corp. /Construction of Minato Plant ・Construction of Dry-type tansformer factory

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

・Expansion of the range of ISO certificate to the Switchgear and Water heater department. ・Tokyo Office was renamed to Tokyo Branch. ・Acquisition of ISO 9001 for the Electric devices division・Acquisition of lSO 14001・Launch of Osaka Office / Construction of Precision equipment Minato plant ・Establishment of SHIHEN VIETNAM Co., Ltd.・Launch of Matsuyama Office

・Acquisition of ISO 9001 for the Precision equipment division ・Construction of a new office at the head office ・Launch of Chugoku Office (Fukuyama)・Establishment of Shihen Precision Machinery (Dongguan), Ltd.

・Launch of Tokyo Office August 31, 1988・Company name was changed to Shihen Technical Corporation.

The first shipment transformer of this company. (1947)

Since 1946

History of products

The shipment of the first product in 1946A pole transformer burned in the war was repaired.

樹脂金型

Digital controlled switchgear

Power supply for LED ceiling lights (for domestic uses)

Power supply for LED downlights

Power supply for printers

Power supply for industrial label printers Power supply for vending machines

Heat pump water heaterswith two connected tanks

Large type heat pump water heater

Top runner oil-immersedtransformer

Transformer forpower distribution substation

Electric water heater [round type]

Electric water heater [square type]

Single dies

Mobile substation

Dry-type transformerPole-mountedtransformer

High-speed terminal dies

Natural refrigerant heat pump water heaters （CO2）

Automated machinery, hydraulic pressing machine Resin mold (processing sample)

Pressed product

Substation monitoring LAN system

Outdoor 22 kV closed switchgear

Digital controlled monitoring control system

Range of business

Used for converting and controlling electricity at substations, utility poles, and factories

Contro

l panels

Switch

gear，

Transform er, Reactorpurposes and lightingPower supply for industrial

Precision dies Electric water h

eater

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Shihen Technical Corporation is working on five business domains based on “technologies to ensure stable power supply” that the company has accumula ted in its history.

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

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

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

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

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

■Support system

【33 kV insulation technology】

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

【Reduced size of distribution substation】

【Standard customized design and technology for top-runner】

【Technologies to design transformers for thyristors and inverters】●We design and produce thyristor transformers such as bridge connection 　　and double star connection as the power supply for rectifiers.● We also have technologies to design and manufacturer output transform　　ers for multiplex inverters for reducing high-frequency wave interference 　　and transformers for IGBT converters of large variable-speed systems.

We quickly respond to problems to ensure a stable supply of electricity.

●Large-capacity oil-immersed transformers, mold transformers, and type-H dry transformers have the 　　　　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.●We improve the efficiency of operation and maintenance using network communication and 　　　　　software technologies.

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 as aluminum case type control panel.

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

66kV class oil-immersed transformer Digital control and protection panel

66kV distribution substation (Shikoku Electric Power)

Installation of transformer Repair of switchgear

66kV transmission tower A substation within the premise of a transmission tower

Provides high quality electric energy in a stable supply 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 transformers and reactors

Technologies of switchgear and control panel

Forced-oil water-cooled transformer for thyristor.

【Support system for transformers and switchgear】

Processed productProgressive processing

Materials

Processed productProgressive processing

Materials

Developed product evaluation test Development tool

Progressive processing

開発風景

Materials

Dies assembly Example of processed product

Simultaneous production of two product rolls

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【Technology of microcomputer application system】

【Inverter application technology】

【Power supply for LED lighting】

【DC stabilizing power supply】

【Two-material parallel-feed composite dies】

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

【Multi-process integrated dies】

■Progressive press dies technology

We support our customers with a variety of inverter technologies.

We produce advanced pressing dies for which high precision is required using solid technologies and the skills of expert workers.

Technology of power supply for industrial purposes and lighting

Precision dies technologies

【Electronic ballasts for fluorescent lamps】

●We can design and produce power supplies for various 　purposes. We provide optimal design and manufactur　ing 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.

This dies enables both improved yield and high productivity by simultaneously forming two lines of dies facing each other using one material.

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

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, which enables the processing speed of 700 strokes/minute.

●We enable reduced cost and smaller size with 　advanced 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 from 　overload, overcurrent, and overheating).

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

●We use advanced system design technologies to 　optimize circuit and software designs.●Production can be selected for different purposes 　ranging from cost effective microcomputers to　performance-oriented high-power devices.

●We can design and produce various types of inverters 　to respond to the needs of our customers.●We realize continuous dimming which does not 　require a dimmer.

ISO14001

No.E1107-ISO14001

Volunteering in tree-planting Participation in city park clean-up Participation in Tadotsu FestivalVolunteering in beach cleanup

【Power supply for LED lighting】

■ Registration of ISO14001

Companies need to actively fulfill social responsibilities rather than only ensuring compliance to coexist with local communities and the environment for continuous development.

Shihen Technical Corporation is implementing CSR activities based on the CSR activity policies of Shikoku Electric Power Co., Inc. and Daihen Corporation as a member of the Shikoku Electric Power Group and Daihen Group.

● We prioritize in customer satisfaction and provide products and services which are 　 beneficial to the society while fully paying attention to the safety with sincere attitudes.

● We aim to improve corporate value for the long-term and in continuous ways to engage 　 in healthy and transparent business activities.

【Specific activities concerning compliance】

【Code of conduct】

● We established “compliance committee” in the company to promote compliance activities and 　investigate concerns submitted to the compliance consultation section.

● We regularly provide compliance education to all employees to make sure that they have 　correct understanding and recognition concerning compliance. We also ensure that 　compliance is strictly followed.

■ Environmental management ■ Compliance

■CSR (corporate social responsibility) activity

■Examples of Environmentally friendly product

【top-runner transformer】

【Heat pump water heaters】 【Silicone oil-immersed transformer】

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We are actively working on environmental conservation activities.

We respect all laws and regulations relevant to our business activities and fulfill social responsibilities.

Environmental conservation activities

Compliance and CSR activities

Shihen Technical Corporation aims to enable sustainable economic development and become a company that helps local communities coexist with the environment by providing products which benefit both people and nature under the company policy of “Serving through creation”A part of our Environmental management includes green procurement which prioritizes in purchasing products, parts, materials, and packaging materials with low environmental loads.

Improving the efficiency to convert the household AC power supply to DC power supply assists further improvement of the energy efficiency of LED lighting.

We have been broadening the sales of products which company with top-runner secondary standard starting in 2014.

We are developing high-effi-cient heat pump water heaters.

This transformer uses silicone oil as insulation oil.The silicon oil has self-extin-guishing property and dissolves in water into harmless substances in case it leaks into the ground.

We invite local elementary school students to observe our factories. Electric mechanisms are explained to assist their understanding.

Chugoku OfficeChugoku Office

Sakaide Kita IC

Takamatsu Chuo IC

JR Takamatsu To Tokushima

To Tokushima

To Kochi

To Matsuyama

Sakaide IC

Kojima IC

Sakaide JCT TakamatuNishi IC

Zentsuji IC

TakamatsuHigashiIC

TakamatsuExpressway

Takase PlantTakase Plant

Sanuki Toyonaka IC

Ohnohara IC

Sanuki Toyonaka IC

Mizushima IC

JR Tadotsu

■Map of highways

●From Zentsuji IC …10 minutes

Ohnohara IC

The Great Seto Bridge

Takamatsu OfficeTakamatsu Office

Takamatsu Airport

Transformer Minato Plan

Precision Equipment Minato Plant

Shihen Tech Head office plant

■Tadotsu Chuzo tekkosho Corporation ■Tadotsu Chuzo tekkosho Corporation

Takase PlantTakase Plant

Transformer Minato PlantTransformer Minato Plant Precision Equipment Minato PlantPrecision Equipment Minato Plant

Takamatsu OfficeTakamatsu OfficeTokyo Branch OfficeTokyo Branch Office

Chugoku OfficeChugoku Office

■Shikoku Kosho Co., Ltd.■Shikoku Kosho Co., Ltd.

■TADOTSU UNSOU CORPORATION■TADOTSU UNSOU CORPORATION

■Minami Electric Co., Ltd. ■Minami Electric Co., Ltd.

■Yoshino Denki kogyo Corporation■Yoshino Denki kogyo Corporation

■Sone Kougyo Corporation ■Sone Kougyo Corporation

■Shikoku Tosou Corporation ■Shikoku Tosou Corporation

Affiliated companiesAffiliated companies

SubsidiesSubsidies■ Factories in Japan

■ Sales bases

Electric power equipment sales department, Enterprise sales sectionTEL: +81-877-33-2525 FAX:+81-877-56-6067Electric Devices divisionSales department Sales section TEL: +81-877-33-2323 FAX:+81-877-33-0775

Transformer and Switchgear:

Power supply for industrial purposes and lighting:

inquiry@shihen.co.jpContact via Email

Telephone service hour

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

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

Precision Equipment division and sales division TEL: +81-875-72-4111FAX:+81-875-72-4110

Electric water heater:

Precision dies:

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We have constructed factories near the head office for efficient operation

We are supplying low-cost and high quality parts and service in quick operations with our unique technologies

Domestic bases Shihen Tech Group

Produced product category: transformer, distribution board, Power supply for industrial purposes and lighting

Produced product category: transformer, switchgear, power supply for industrial purposes and lighting

Produced product category: transformer･ switchgear

Produced product category: Heat pump water heater, Electric water heater

Produced product category: Precision dies, Electric water heater

1-97 Sakuragawa 2-chome, Tadotsu-cho, Nakatado-gun, Kagawa 764-8507TEL: +81-877-33-1212 (main line)

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

3F of the main building of Yonden Building, 2-5 Marunouchi, Takamatsu-shi, Kagawa 760-0033TEL: +81-87-851-1691 FAX: +81-87-823-2493

2-22 Hikinocho 2-chome, Fukuyama-shi, Hiroshima 721-0942TEL: /FAX: +81-84-943-7156

Hamamatsucho Station of the JR Yamanote Line 3 minute walk from the South Exit (Kanasugibashi Exit) Daimon Station of Toei Oedo Line and Asakusa Line4 minute walk from A1 Exit

Shiba Koen Station of Toei Mita Line 5 minute walk from A3 Exit Along the Daiichi Keihan Road

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

200-1, hiji,Takase-cho, Mitoyo-shi, Kagawa 767-0004TEL: +81-875-72-4111 (main line)

16-13 Nishiminatomachi, Tadotsu-cho, Nakatado-gun, Kagawa, 764-0017 TEL: +81-875-72-4111 (Takase Plant)

Head office/Head office plant

1-82 Sakuragawa 2-chome, Tadotsu-cho, Nakatado-gun, Kagawa 764-0012TEL: +81-877-32-2653 FAX: +81-877-32-2681Nature of business/ ● switchgear(design and assembly) ● mechanical assembly ● design and assembly of FA devices

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

15 Nishiminatomachi, Tadotsu-cho, Nakatado-gun, Kagawa 764-0017TEL: +81-877-33-4224 FAX: +81-877-32-7286Nature of business/ ● production of transformer cases and sheet metal processing ● Product painting

1-74 Sakuragawa 2-chome, Tadotsu-cho, Nakatado-gun, Kagawa 764-0012TEL: +81-877-32-3049 FAX: +81-877-32-3040Nature of business/ ● winding and assembly of mid-to-small-size transformers ● maintenance of electric equipment including installation and adjustments

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

5-79 Kitagamo 3-chome, Tadotsu-cho, Nakatado-gun, Kagawa 764-0022TEL: +81-877-33-2244 FAX: +81-877-33-4282Nature of business/ ● sheet metal processing and assembly ● pressing and assembly

1-40 Sakuragawa 2-chome, Tadotsu-cho, Nakatado-gun, Kagawa 764-0012TEL: /FAX: +81-877-32-3746Nature of business/ ● painting of transformers and switchgear

東京支社

大門

赤羽根

新橋新橋

汐留

三田

浜松町

ＪＲ山手線

都営大江戸線

東京モノレール

東京モノレール

都営浅草線

芝公園

都営三田線

The Office

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

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

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

SHIHEN VIETNAM Co., Ltd.SHIHEN （THAILAND） CO., LTD.

Since the company opened in 1996 as the first overseas plant of Shihen Technical Corporation, this company has accumu-lated production technologies for the long term and supply-ing high quality products in a stable supply.

Introduction of the company:

Introduction of the company:Since the establishment in 2007, Shihen Vietnam has been implementing production activities as the second overseas plant of Shihen Technical Corporation. Employees have advanced skills and are producing low cost and high quality products in a stable supply.

Nature of business:

Production category: ● DC stabillized power supply ● Power supply for LED lighting ● Small transformer

Production category: ● DC stabillized power supply ● Power supply for LED lighting

Introduction of the company:

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Overseas bases Overseas plants are based on advanced quality and cost effectiveness and venturing into the giant Asian market

Vietnam

Cambodia

Laos

Thailand

Myanmmar

Hong Kong

Taiwan

China

Philippines

Shihen Tech

Room 610, Mingdian Building, No. 118 Changzhong Road, Chang’an Town, Dongguan City, Guangdong Province, ChinaTEL +86-769-8702-9980 FAX +86-769-8258-5935

● Sales of precision dies ● Outsourcing production of local Chinese manufacturers and providing technical instructions

This company is located in areas with many automobile manufacturers in China. A precision dies sales base was established in Guangdong Province in South China where the largest market of dies is located. The operation started in August 2013.

SHIHEN Precision Mold Trade

SHIHEN VIETNAM

SHIHEN （THAILAND）

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

As of July 1, 2020

■Ratio of sales by equipment

■Overview of the company

■Board members

Tadashi Kojima, PresidentMinoru Fukuda, Executive directorShuji Ohira, Executive directorHiroshi Takai, DirectorKatsuhiko Fujiwara, DirectorIchiro Tokai, Director

Susumu Yamaji, DirectorNorio Takahashi, DirectorKazuo Kamo, DirectorIsao Kobayashi, DirectorMasana Morioka, AuditorHiroshi Kawahara, Auditor

Company nameAddress of the head officeEstablishmentNature of business

Capital fundEnd of fiscal yearBanksNumber of employeesLot spaceBuilding

Registration, etc.

Shihen Technical Corporation1-97 Sakuragawa 2-chome, Tadotsu-cho, Nakatado-gun, Kagawa August 31, 1946Main operations include the production, repair, sales/purchase, and import/export of transformers, other electric machinery and equipment, mechanical equipment in general as well as design and contracting of relevant constructions.318.5 million yenEnd of March (once a year)Chugoku Bank, The Hyakujushi Bank, MUFG Bank, Mizuho Bank and The Iyo Bank474 (as of July 1, 2020)115,474㎡ 49,487㎡

Electric water heaterPrecision dies and pressed parts

Transformer

Total 15.1 billion yenFY 2019

Switchgear

Profile

Permission numberDate of the permissionType of construction business

#3641, permitted by the governor of Kagawa (Special-28)November 28, 2018 (effective for five years)Electric work

Electric construction work (general purpose, electric construction for in-house uses)Type I cargo transportation workElectric heating device manufacturing workAC electric machinery and equipment production work

Governor of Kagawa registration #13010

Shikoku Transportation Bureau Shikoku Transportation Cargo #343Director of Shikoku Economy and Industry BureauDirector of Shikoku Economy and Industry Bureau

Power supply for industrial purposes and lighting

Permission for specified construction business