| October 1957 |
Changed the corporate name to Sanshin Tokki Manufacturing Co., Ltd. |
| February 1975 |
Established Sanshin Shoko Co., Ltd. by separating the sales and design/electric equipment departments and strengthened sales operations. |
| November 1986 |
Received the Niigata Prefecture Technology Award for the development of the double-side lapping machine for floppy disks and hard disks. |
| November 1987 |
Merged Sanshin Tokki Manufacturing Co., Ltd. and Sanshin Shoko Co., Ltd., under the corporate name Sanshin Co., Ltd. |
| June 1989 |
Started the manufacture of the super-finishing system for the shaft pin and journal. |
| May 1990 |
Started the manufacture of the spherical lens film lapping system. |
| November 1990 |
Started the manufacture of the film lapping system for color LCD panels. |
| August 1994 |
Started the manufacture of the film lapping system for optical fiber edge face. |
| September 1995 |
Started the manufacture of the lapping film-type PDP grinding system. |
| March 1997 |
Developed the DVD bonding system and started delivery. |
| October 1997 |
Approved as a certified enterprise under the Temporary Law concerning Measures for the Promotion of the Creative Business Activities of Small and Medium Enterprises. |
| December 1997 |
Started development and delivery of the lapping film-type inner diameter super-finishing system. |
| March 1998 |
Approved as a certified investment enterprise of the Niigata Prefecture New Industry Creation Project. |
| March 2000 |
Received the Niigata Prefecture Technical Award for the research and development of abrasive compound and grinding systems for precision films. |
| March 2004 |
Started the manufacture of systems that are specialized for the use of automotive and related products. |
| June 2005 |
Manufacture and sale of crankshaft lapping machines. |
| December 2008 |
New office building completed. |
| October 2009 |
Selected as “300 Energetic Manufacturing SMEs 2009.” |
| July 2010 |
Adopted for the Nagaoka City Frontier Project in 2010. |
| September 2011 |
Development and sale of SFM and Super Finisher Mini outer diameter lapping machines. |
| September 2012 |
The flat surface polishing machine FTL-5D was adopted for the Nagaoka City Frontier Challenge. |
| March 2013 |
Developed the centerless polishing machine (CLP-300). |
| March 2013 |
Developed the tape type flat lapping machine (TCM-150SD). |
| March 2013 |
Developed the inner and outer diameter finishing machine (MFIL-V). |
| December 2013 |
Development and sales of cam lap machines. |
| November 2014 |
Development and sales of ball screw shaft and nut groove lapping machines. |
| February 2015 |
Received certification for “new collaboration.” |
| December 2015 |
Completed installation of solar panels for snowfall and started power generation. |
| January 2016 |
Received the “Nikkan Kogyo Shimbun Award” at the 33rd Excellent Management Awards Ceremony. |
| April 2016 |
Ball screw tape polishing machine is certified by Naze “Gougi 2016.” |
| November 2016 |
Received the “Technology Award” from the Hokuriku Shin-Etsu Branch of the Japan Society for Precision Engineering. |
| December 2017 |
Selected as a “regional future driver” by the Ministry of Economy, Trade and Industry. |
| May 2018 |
Head office renovated |
