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Message from the President

President and Representative Director: Tomoyuki Kobayashi

Since our founding in 1967, we have focused on the development, design, and manufacturing of precision machinery and component processing, always acting with customer satisfaction in mind and striving to enhance our technical capabilities.
Thanks to your continued support, we have earned the trust of many customers. We hope that this website will help more people learn about our company.
We sincerely appreciate your continued support and patronage.

Tomoyuki Kobayashi, President and Representative Director

Basic Philosophy

  1. We aim to be a company trusted by our customers and the local community.
  2. All employees strive to refine their technical skills and foster creativity to build a strong and resilient company.

Business Activities

About Us

Company Name: Nanan Seiko Co., Ltd.
Representative: Tomoyuki Kobayashi
Address: 2300-1 Toyoshina, Azumino City, Nagano Prefecture 399-8205
TEL: 0263-72-2400
FAX: 0263-73-0670
URL: https://www.nanan.co.jp
E-MAIL: info■nanan.co.jp Please replace “■” with “@” when sending the e-mail.
Capital: 10 million yen
Date of Establishment: October 1980 (founded October 1967)
Main Banks Hachijuni Bank, Toyoshina Branch
Nagano Prefecture Credit Cooperative, Azumino Branch

Access

▲ 3-minute walk from Minami-Toyoshina Station on the JR Oito Line

▲ 6 minutes by car from Hotaka Station on the JR Oito Line

Company History

October 1, 1967 Founded Honmura Denshi, specializing in precision machinery assembly and component processing
October 1, 1980 Incorporated to expand the business
Established “Nanan Seiko Co., Ltd.”
Capital: 5 million yen
Started watch component assembly and processing transactions with Shimauchi Seiki Co., Ltd.
October 1, 1994 Reorganized as a joint-stock company due to business expansion
Established Nanan Seiko Co., Ltd.
Capital increased to 10 million yen
August 1, 1998 Relocated headquarters factory to the Azumino Industrial Park in Toyoshina Town
Started mass production with the introduction of large-scale automated lines
Former headquarters repurposed as Motoyoshi Factory
October 1, 2001 Launched labor-saving machinery manufacturing business
August 17, 2004 Expanded headquarters factory and added automated production lines
October 1, 2004 Launched “Tokeiya Fukkokudo” business
October 1, 2006 Started component cutting and machining business
August 3, 2007 Reopened Tokeiya Fukkokudo store after renovation
October 1, 2011 Relocated headquarters to Motoyoshi Factory
December 1, 2015 Relocated headquarters office building (within factory premises)
May 1, 2017 Hotaka Factory began operations 
November 1, 2023 Expanded Hotaka Factory and increased capacity of assembly facilities

Factory Information

Head Office and Head Office Factory

The head office also houses “Tokeiya Fukkokudo,” which provides repair and sales of Japanese antique watches and original watches.

Head Office and Head Office Factory
Address: 2300-1 Toyoshina, Azumino City, Nagano Prefecture 399-8205
TEL: 0263-72-2400
FAX: 0263-73-0670

Hotaka Factory (Plant 1 and Plant 2)

Hotaka Factory
Address: 7558-5 Hotaka, Azumino City, Nagano Prefecture 399-8303
TEL: 0263-31-6023
FAX: 0263-31-6024

Tokeiya Fukkokudo

Tokeiya Fukkokudo
Address: 2300-1 Toyoshina, Azumino City, Nagano Prefecture 399-8205
TEL: 0263-73-5581
FAX: 0263-72-9540