Message from the President
In June 2025, I assumed the role of President as the third-generation leader. Being appointed in my 30s—transitioning directly from Sales Manager to President—was a great surprise not only to those around me, but also to myself. Nevertheless, I am fully committed to fulfilling the mission entrusted to me and moving forward with determination.
Top Seiko was founded in 2001 with the strong vision of becoming the world’s leading manufacturer of precision machined components. Guided by this vision and supported by those who shared it, we have established a solid business foundation in precision machining of ceramics and refractory metals. Today, we contribute to a wide range of industries, including semiconductors, aerospace, infrastructure, and automotive. This foundation is a significant asset and competitive advantage for our company. However, sustainable growth cannot be achieved by simply continuing along the same path.
To drive further growth, we began full-scale entry into the field of diffusion bonding in 2025, leveraging our existing core technologies to expand our business domain. Diffusion bonding holds strong potential in terms of market demand and future growth, and we are confident that it will become a new pillar of our business. In this sense, we are now in what can truly be described as our “second founding” phase. By combining our accumulated tangible and intangible assets with new technologies, we will continue to embrace challenges and accelerate the next stage of our business evolution.
At the same time, we are advancing organizational reforms to build a stronger and more open company during this second founding phase. The new management team has inherited from our founder the values of taking on unknown challenges without predefined answers and seeing them through to completion. With this shared mindset, we will operate as one team, fully committed to both inheritance and evolution. Our goal is to create an environment where each individual at Top Seiko can proactively embrace challenges under a new paradigm, maximize the strength of teamwork, and shape the future of manufacturing. We aim to remain an indispensable partner for society and for our customers for many years to come.
We sincerely appreciate your continued guidance and support.
Shota Nakagawa
What We Aim For
Continuing to Create Innovation Through Technology
The ceramic and refractory metal components we manufacture support the future of a wide range of industries.
To help realize a more prosperous society and a sustainable world, we will continue to create innovation through technology.
Top Seiko will keep taking on new challenges.
Company Philosophy
- We lead human beings towards happiness through our activities
- We keep being ambitious and always seek truth and fairness
- We bring new value to the world with logical mind
- We aim to live a life of abundance for the next thousand years
Overview
| Company Name | Top Seiko Co,. Ltd. |
|---|---|
| Founded | September 14,2001 |
| Capital | ¥20,000,000 JP Yen |
| Location & Contact Details |
Head Office & Plant Nishikozaka Factory Subsidiary in the US |
| Management |
President & CEO : Shota Nakagawa Senior Executive Director : Kazuyuki Nishikawa Founder and Chairperson : Yoichi Azai Director & CTO : Kouji Goshima Director : Takuya Yukawa Director : Takahiro Enomoto Corporate Auditor : Kohei Kawamura Outside director : Keita Kunimatsu Outside director : Koki Inoshi |
| Employees | 151（May, 2026） |
| Business |
Manufacturing and sales of brittle material products such as various ceramics and glass. Manufacturing and sales of high-melting-point metal products such as tungsten and molybdenum. |
| Industries Served | Semiconductors, measurement and analysis, medical equipment, industrial machinery, precision machinery, aircraft, automobiles, energy-related products. |
Company History
| Sept. 2001 | Established Top Seiko Co., Ltd. |
|---|---|
| March 2002 | Constructed a new plant in Otsumicho, Nagahama City, Shiga Prefecture |
| June 2004 | Extended the company building |
| Sept. 2005 | Started to acquire ISO 9001 certificate |
| Aug.2006 | Extended a new company building |
| Aug. 2006 | Company acquired ISO 9001:2000 / JISQ 9001:2000 certification |
| Oct. 2008 | Constructed and moved to the headquarters plant in Hosoecho, Nagahama City |
| Mar. 2012 | Selected for government subsidy program for innovative company |
| June 2013 | Exhibited for the first time at the 17th Mechanical Components and Materials Technology Expo |
| May 2015 | Appeared on NHKTV's "Chozetsu Sugo Waza!(Super Amazing Techniques!)7' |
| April 2017 | Head office plant expansion (floor area: approx. 3,000㎡) |
| Dec. 2018 | Exhibited for the first time at the 3rd Advanced Ceramics Expo (Makuhari Messe) |
| Sept. 2021 | Expansion of head office and factory (2-story building with a total floor area of 2,500㎡ ) |
| Jan.2023 | Established Top Seiko USA, Inc. in Greater Chicago, IL. |
| Oct. 2023 | Completion of construction of a new factory (2-story building with a total floor area of 6,400㎡) |
Quality Policy
In August 2006, Top Seiko obtained certification for its quality management system under ISO 9001:2000 / JIS Q 9001:2000, with the aim of further enhancing customer satisfaction and providing safe, high-quality products through the unified efforts of all employees.
We will continue to effectively operate our quality management system and strive to remain a trusted and valued technology-driven organization for our customers.
Basic Quality Policy
- 1Customer focus as the foundation of management
- 2Ensure compliance with QMS requirements, utilize them effectively, and pursue continuous improvement and growth
- 3Operate with consideration for environmental protection and human health