Manufacture and sale
・IC testers and
(Processing of parts)
“The Company Is Its People, and The People Are What They Believe”
The current environment surrounding Japanese industry necessitates the con-
tinuous creation of innovative technologies. It requires that companies
transform themselves through those innovations in order to survive in the
global economy. Amid this challenging environment, we at Yamamoto
Manufacturing strive to maintain and improve our high standards of
technology, quality and reliability based on unique production methods
and know-how. Thus we adhere to the key principle that “quality is the life
of manufacturing." The employees of Yamamoto Manufacturing make this
principle part of their lives and devote their full effort to the pursuit of
quality. As a company and corporate community, we strive always to
exceed the limits of possibility.
People are the heart of any company, in any era. Moreover,
people are what they believe. That is why I'm committed, under my
philosophy that "The company is its people, and the people are what they
believe," to the company's eternal progress and the happiness of
employees by doing the best I can to encourage everyone to seek self-
improvement and the highest purpose through dedication to excellence
in their work.
Providing society with high-quality products
Yamamoto Mfg. Co., Ltd.
|June 1945||Kokueki Manufacturing Inc. was established with capitalization of 850,000 yen.|
|February 1946||Kokueki Manufacturing began producing watch cases and dial plates.|
|October 1951||Kokueki Manufacturing changed its name to Yamamoto Mfg. Co., Ltd.|
Yamamoto Mfg. built its Irumagawa Factory in Sayama City, Saitama Prefecture
as a dedicated factory for watch cases.
Yamamoto Mfg. established Yamamoto Metal Industry Mfg. Co., Ltd. in Hidaka City,
Yamamoto Mfg. opened its engineering research center in Tokorozawa City,
Saitama Prefecture, for the conduct of R&D in electronics.
|July 1967||Yamamoto Mfg. established a one-stop production factory for printed circuit boards on the premises of the Engineering Research Center.|
Yamamoto Mfg. obtained a UL listing and began exporting printed circuit boards
directly to the U.S.
Yamamoto Mfg. established Ogawa Precision Mfg. Co., Ltd. in Ogawa-cho,
Saitama Prefecture,to step up the production structure of its Case Division.
|April 1977||Yamamoto Mfg. introduced the kanban method and began operating the NYPS system.|
Yamamoto Mfg. built a factory for high-density, multi-layer printed circuit boards
on the premises of its Tokorozawa site.
Yamamoto Mfg. built a new, state-of-the-art factory for printed circuit boards in Honjo City, Saitama Prefecture.
Yamamoto Mfg. established Yamamoto Mfg. (HK) Co. Ltd.
in Hong Kong as a basis for the overseas expansion of its watch business.
|August 1989||Yamamoto Mfg. established a new CAD center on the premises of its Tokorozawa site.|
|December 1989||Yamamoto Mfg. established Yamamoto Manufacturing (U.S.A.) Inc. in California, U.S.A.|
|August 1991||Yamamoto Mfg. established Senco Industries Limited in Hong Kong.|
|November 1994||Yamamoto Mfg.’s Honjo site obtained ISO－9002 certification.|
Yamamoto Mfg., established Dongguan Sanben Metal & Electronics Co., Ltd.
(which later became Dongguan Yamamoto Electronics Technology Co., Ltd.)
in Dongguan, Guangdong Province, China.
|June 1996||Yamamoto Mfg.’s Tokorozawa site was certified as an ISO－9001 facility.|
Dongguan Yamamoto Electronics Technology Co., Ltd. began the production of
printed circuit boards.
|February 2000||Yamamoto Mfg.’s Honjo site was certified as an ISO－14001 facility.|
|December 2000||Yamamoto Mfg.’s Tokorozawa site was certified under ISO－14001.|
|February 2002||Yamamoto Mfg.’s Honjo site modified its systems in compliance with ISO－9001.|
Yamamoto Mfg., established Yamamoto Precision Co., Ltd. and added
Mizuki Electronics Co., Ltd. to the Group, initiating the design, manufacture
and assembly of mechanism parts.
Yamamoto Mfg. established Yamamoto Electronics Co., Ltd. for the expansion
of its Printed Circuit Board Division.
Yamamoto Mfg., established a new factory of Ogawa Precision (HK) Co., Ltd.
Dongguan Yamamoto Electronics Technology Co., Ltd. completed its new company building.