About Us

Company Overview

Address Head Office: 10-1 Kumonjo, Saiwai-cho, Toyota, Aichi
Nagano Plant: 731 Shimotonooka, Iida, Nagano
Shinsei-koki Thailand Co.,Ltd:
WHA Chonburi Industrial Estate 1, 331/103 Moo 6, T.Bowin, A.Sriracha,Chonburi 20230 Thailand
Established August 1976
Capital 42.5 million yen
Annual sales 8 billion yen (consolidated)
Employees 200 (Japan)
Main clients Tokai Rika Co., Ltd., and others
Industry Automotive parts manufacturing
Executive Officers President: Masashi Matsushita
Senior Managing Director: Hiroo Onoda
Director: Kenichi Sugiyama
Corporate Auditor: Teruaki Kada
Corporate Auditor: Minoru Hirone


August 1976
Shinsei-koki is established in Kamigo, Toyota, Aichi Prefecture.
January 1977
The company begins doing business with Tokai Rika.
August 1984
The company receives a PM Excellence Award.
February 2001
The company obtains ISO 9001 certification.
December 2007
The first new plant is built.
July 2008
The second new plant is built.
December 2008
The office building is built.
June 2012
The company develops its own AGV (automatic guided vehicle).
September 2012
The first AGV unit is shipped.
August 2013
Shinsei-koki Thailand Co., Ltd. is established (capital: 100 million baht).
March 2014
The Nagano Plant is established (in Iida, Nagano Prefecture).
December 2015
Shinsei-koki Thailand obtains ISO 9001 certification.
February 2018
Production of seatbelt products begins.
May 2018
A building expansion at Shinsei-koki Thailand is completed.
December 2018
Nagano Plant renovations are completed.
December 2019
Production of switch products begins at Shinsei-koki Thailand.
April 2021
Production of switch products begins at the Head Office.
November 2021
Shinsei-koki Thailand obtains IATF certification.
October 2022
The company obtains ISO 14001 certification.