Company Profile
Message from the President
Since its founding, Sekiguchi Manufacturing has been producing various molds, primarily for printed circuit boards. As times changed, we focused on the next major product: molds for electronic components and flexible printed circuit boards. We started manufacturing molds for electronic components necessary for various home appliances and AV equipment. Leveraging this experience and knowledge, we have also produced precision molds for TAB tapes used in semiconductor electronic components, always maintaining high quality and short delivery times as demanded by our customers. Using the experience and high-precision machinery we have cultivated, we have been contributing to Japan’s manufacturing industry and society.
In 1993, ahead of the global society, we expanded overseas by establishing a presence in Taiwan. Since then, we have established group companies in various regions of Asia, receiving support from local customers up to this day.
In 2002, we successfully developed a servo press using a servo motor and precision ball screw, allowing easy setting of top dead center, bottom dead center, and cutting amount. By combining this with a feeding device, we have assisted customers in automating the production of products in various fields.
Sekiguchi Manufacturing celebrated its 50th anniversary in 2017. This milestone was achieved thanks to the support and cooperation of all of you who have supported us in our earnest approach to manufacturing.
We will continue to adhere to the spirit of our founding, always responding to the changes of the times, and striving to meet customer demands and produce high-quality products.
With a passionate desire to “challenge new things,” we aim to evolve in this era of change, and we ask for your continued support for Sekiguchi Manufacturing.

Management Policy
Sekiguchi Manufacturing will respond promptly to changes in the industry environment, such as the advancement of various industries and the progress of international division of labor, through the design and production of high-quality molds and jigs and tools.
Quality Policy
- 1.We aim to provide products that meet customer needs by leveraging our technical capabilities, striving for “zero” internal and external complaints.
- 2.Based on the idea that “better manufacturing comes from a better environment,” we always practice organization, tidiness, and cleaning.
- 3.We meet the requirements of the quality management system and continuously improve its effectiveness.
- 4.We comply with customer requirements and legal and regulatory requirements.
Environmental Policy
Environmental Philosophy
We recognize that global environmental conservation is a crucial issue shared by all humanity. In all aspects of our corporate activities, we act with consideration for continuous improvement and prevention of pollution in the global environment.
Basic Environmental Policy
- 1.We evaluate the environmental impact of our business activities, products, and services, setting goals within the scope of technical and economic feasibility for significant items. We implement and review these goals to improve environmental performance through continuous improvement of the environmental management system.
- 2.We comply with relevant environmental laws and regulations and other requirements to which we agree.
- 3.Throughout all stages of our business activities, we address the following environmental impacts in particular:
- (1).Thoroughly separate and reduce waste.
- (2).Promote resource recycling.
- (3).Regularly conduct environmental beautification activities around the workplace.
- 4.We provide environmental education and awareness-raising activities to all employees.
- 5.We disseminate the environmental policy in writing to all employees and make it publicly available.
Company Profile
Company Name | Sekiguchi Manufacturing Co., Ltd. |
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Location |
2-23-12 Miyauchi, Nakahara-ku, Kawasaki-shi, Kanagawa 211-0051, Japan ![]() |
Domestic Bases |
Takatsu Factory Sano Factory Akita Factory |
Overseas Bases Group Companies |
Taiwan Sekiguchi Industrial Co., Ltd. |
Capital | 60 million yen |
Officers | Chairman Emeritus: Isamu Sekiguchi President: Kazunori Numao Senior Managing Director: Masahiro Sekiguchi |
Number of Employees | 90 |
Manufacturing and Sales Items | Flexible PCB (FPC) molds TAB/COF molds BGA/CSP molds Servo presses Press processing Various parts processing |
(You can download it through the database site “EMIDAS”.
Membership registration on EMIDAS is required for download.)
History
January 1967 | Founded Sekiguchi Manufacturing |
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January 1974 | Completed second factory and started operations |
July 1975 | Established Sekiguchi Manufacturing Co., Ltd. (capital: 3 million yen) |
October 1979 | Established Toyo Seimitsu Kiko Co., Ltd. (capital: 3 million yen) |
July 1981 | Completed third factory and started operations |
November 1982 | Changed company name to Sekiguchi Manufacturing Co., Ltd. (capital: 6 million yen) |
March 1988 | Increased capital to 9 million yen |
October 1989 | Established Toyo Seimitsu Kiko Co., Ltd. Sano Factory (current Sano Factory) |
November 1991 | Opened Sano Factory (current Sano Factory) |
February 1993 | Established Taiwan Sekiguchi Industrial Co., Ltd. |
August 1993 | Increased capital to 10 million yen |
October 1998 | Established Hokuyo Parts Co., Ltd. (current Akita Factory) |
April 1999 | Completed Takatsu Factory and started operations |
March 2000 | Increased capital to 30 million yen |
May 2001 | Established TSKT Co., LTD. in Thailand |
July 2002 | Established Zhuhai J&T Precision Industry Co., Ltd. in China |
September 2004 | Expanded Toyo Seimitsu Kiko Co., Ltd. Sano Factory (second factory) |
October 2005 | Established HOKUYO PRECISION VIETNAM CO., LTD. |
September 2007 | Completed fifth factory and started operations |
August 2017 | Installed press room in the fifth factory |
February 2018 | Installed clean room in the fifth factory |
October 2021 | Merged with Toyo Seimitsu Kiko Co., Ltd. (capital: 60 million yen) |
April 2023 | Obtained ISO 9001 certification for the headquarters factory |
March 2024 | Obtained ISO 14001 certification for the headquarters factory |