About us

Message from the President

Thank you for visiting our website.

Since our founding, we have consistently strived to manufacture the highest quality molds.
Thanks to our customers, we have earned the trust of not only the automobile industry but also companies in various other fields, we have been able to be in the manufacturing business for over half a century.

Our mission is always the same: To provide the best molds and products possible to our customers.
After accurately assessing a customer’s needs, we use our technological prowess and creativity to produce high-precision molds.
We do not only manufacture molds, but have also developed a wide range of businesses such as production of die-cast, plastic, and pressed products, product assembly, and automated machine manufacturing all integrated and in-house, always striving to provide more added value to our customers.
We also provide and sell individual parts of equipment and products in any field to meet our customers’ needs.

We strive to be not simply a manufacturer, but also a partner that values our relationships with customers built on trust.
We are proud to help our customers grow their businesses and forge the future together.

In addition, a company needs to be accepted by their local community.
It is our mission to give consideration to the environment and to contribute to the realization of a sustainable society.
We work to minimize our impact on the environment and fulfill our responsibilities to local communities.

We will continue to boldly face change and challenges with unwavering passion and sincerity, committed to providing even better products and services.
Continuing to grow side by side with our customers, we aim to realize a more abundant society.

We would like to express our deepest gratitude for the trust and support our customers have placed in us. All of our employees will continue to work whole-heartedly to ensure that never changes, and we look forward to your continued support going forward.

Message from the President

Sansho Giken Co., Ltd. Representative Director and President
Masao Hoshima

Company Profile

  • Company Name Sansho Giken Co., Ltd.
  • Established 10, June, 1969
  • Capital 100 million yen
  • Location Sansho Giken Head Office and Factory
    1586 Kamikoizumi, Namerikawa City, Toyama Prefecture, 936-8501

    Kamiichi Factory
    723 Takehana, Kamiichi machi, Nakaniikawa-gun, Toyama Prefecture, 930-0301

    Tokyo Office
    Nissei Oji Building 7F, 2-30-3 Oji, Kita-ku, Tokyo Prefecture, 114-0002

    Nagoya Office
    Tsukimigaoka Building Luna Plaza 3F 302,2-5 Hoocho, Chikusa-ku, Nagoya City, 464-0057

    SANSHO GIKEN (Z) CO., LTD.
    Land Lot No.51, Zhuhai Free Trade Zone, Hongwan, Zhuhai, Guangdong Province, People’s Republic of China, 519030

    Sansho Vietnam Co., Ltd.
    No 6, 6 Street, Vsip 2 Industrial Park, Hoa Phu Ward, Thu Dau Mot City, Binh Duong Province, VIETNAM
  • Sales 12.7 billion yen (FY 2022)
  • Representative Director and Presiden Masao Hoshima
  • Employees 224 (as of April 2023)
  • Business Details Design and manufacture of various precision machine molds
    Manufacture of various die-cast products
    Manufacture and assembly of various precision resin products
    Design and manufacture of various automated processing machines
  • Major Clients Advics Co., Ltd. / OMRON Corporation / Koito Manufacturing Co., Ltd. / Sumitomo Wiring Systems Co., Ltd. / Seiko Epson Corporation / Sony Corporation / TE Connectivity Corporation / Denso Corporation / Tokai Rika Co., Ltd. / J.S.T. MFG. CO., LTD. / Japan Aviation Electronics Industry Co., Ltd. / Hirose Electric Co., Ltd. / Furukawa Automotive Systems Inc. / YAZAKI Corporation (order of the Japanese syllabary)
Sansho Giken Head Office and Factory

Sansho Giken Head Office and Factory

Die-cast Factory

Die-cast Factory

Kamiichi Factory

Kamiichi Factory

SANSHO GIKEN (Z) CO., LTD.

SANSHO GIKEN (Z) CO., LTD.

Sansho Vietnam Co., Ltd.

Sansho Vietnam Co., Ltd.

ISO Information

Certification (QMS/EMS)

  • ISO9001 (Certified June 2000)
  • ISO14001 (Certified May 2003)
  • TS16949 (Certified May 2009)

Company History

June 1969
Established Sansho Giken Co., Ltd. (capital: 6 million yen)
November 1972
Entered die-cast molded component business
December 1976
Established Toyama Parts Co., Ltd. (currently: Sansho MEC), as plastic molding division (capital: 5 million yen)
August 1980
Increased capital to 60 million yen
1982
Began production of molded components for automotive connectors
May 1984
Entered automated machinery business
September 1986
Constructed new Kamiichi factory exclusively for die-casting in Kamiichi Town, Toyama Prefecture (Site: 1500m²/Building: 2234m²)
Sansho MEC began connector assembly (parts assembly)
October 1991
Constructed new mold manufacturing factory in Kamiichi (Site: 12,770m²/Building: 2580m²)
Arigane factory established by Sansho MEC
1993
Automated machinery division operations started by Sansho MEC
April 1995
Constructed new automated machine manufacturing factory in Kamiichi (Building: 820m²)
November
Sansho MEC obtained ISO9002 (1994)
April 1996
Hongo Press factory began operation
June 1998
Established Zhuhai Free Trade Zone SANSHO GIKEN (Z) CO., LTD.. (Zhuhai Sansho) in Guangdong Province, China
April 2000
Constructed new technology center (Building: 1480m²) in Kamiichi
June 2001
Sansho MEC began operation of connector assembly factory (Hongo)
ISO9001 (2000) expansion transition
May 2002
Sansho MEC changed the company name of Toyama Parts Co., Ltd. to Sansho MEC Co., Ltd.
May 2003
Obtained ISO14001
July 2004
Obtained ISO9001 (2000) company-wide including technical and sales departments
April 2006
Selected as one of Ministry of Economy, Trade and Industry’s 1st “300 Vibrant Manufacturing Small-to-Medium Enterprises”
August 2007
Relocated and built a new mold manufacturing factory on the same site (building: 5700m²)
November 2008
Sansho MEC Toyama factory began operation
May 2009
Obtained ISO/TSI16949 (Sansho MEC and Sansho Giken Sales department)
August 2011
Established Changzhou Wujin Sansho Automation Equipment Co., Ltd. in China
June 2012
Established Sansho KOREA Co., Ltd. in Korea
September 2013
Sansho MEC established Higashitoyama Factory
August 2015
Established Sansho Vietnam Co., Ltd. in Vietnam

Group Network

Sansho MEC Co., Ltd. Head Office

Sansho MEC Co., Ltd. Head Office

1029-1 Nakashin, Namerikawa City, Toyama Prefecture 936-0861
Official Website

Toyama factory

Toyama factory

3-1 Mizuhashi Senkoji, Toyama City 939-0554

Hongo Factory

Hongo Factory

355-1 Hongo, Namerikawa City, Toyama Prefecture 936-0824

Higashi Toyama Factory Production Machinery Division

Higashi Toyama Factory Production Machinery Division

8-5 Harumidai, Toyama City, Toyama Prefecture 931-8455

Arigane Factory

Arigane Factory

46 Arigane Namerikawa City, Toyama Prefecture 936-0855

Changzhou Wujin Sansho Automation Equipment Co., Ltd.

Changzhou Wujin Sansho Automation Equipment Co., Ltd.

Building 20, Chuangzhi Cloud Valley Industrial Park, 186 Hongxi Road, Niutang Town, Wujin District Jiangsu Province, People’s Republic of China 213-164

Sansho KOREA Co., Ltd.

Sansho KOREA Co., Ltd.

〒16648 228-31 Saneop-ro 155beon-gil, Gwonseon-gu, Suwon-si, Gyeonggi-do, Republic of Korea
TEL:+82-31-296-3334

Equipment Information

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Machining centers 7 units
CNC jig borers 4 units
Jig grinding machines 3 units
Grinding machines 30 units
Wire cut electrical discharge machines 8 units
Small hole electrical discharge machines 2 units
Die-sinking electrical discharge machines 19 units
Injection molding machines (trial molding machines) 9 units
Die casting machines 34 units
(1 unit for aluminum, 17 units for zinc, 16 units for magnesium)
Three-dimensional measuring devices 4 units
Surface roughness measuring devices 1 unit