|1949||April||TOKYO SOKUHAN Co., Ltd.(Capital JPY500,000) founded, started manufacture and sale of standard measuring instruments.
|1950||March||Started manufacture and sale of Air Gauges.|
|1952||April||Joined a NISSAN MOTOR Co., Ltd. group.|
|1953||September||Started the production of Automobile Parts.
|1962||January||New Construction of Sagami Factory (currently, Head Office-Technical Center).
|May||Listed on the 2nd Section of the Tokyo Stock Exchange.|
|1965||November||Transferred Head Office from Ota-ku ,Tokyo to present location in Zama City ,Kanagawa Prefecture.
|December||Started Semiconductor Assembly Equipment Business.|
|1978||April||Started the production of Engine Control Solenoid Valve.|
|1985||February||Started the production of AT Control Solenoid Valve.|
|1991||October||Changed name to TOSOK CORPORATION.|
|December||Completed the 1st phase of construction of Yamanashi Factory. The factory started operations.
|1992||April||Started the production of AT Control Valve Assembly.|
|1994||September||Jointly established TOSOK PRECISION (VIETNAM) CO., LTD. with NISSHO IWAI CORPORATION and AOKI SEIKI KOGYO CORPORATION.
|1997||March||Joined in the NIDEC group.|
|December||Jointly established NIDEC TOSOK (VIETNAM) CO., LTD. with NIDEC CORPORATION.
|1998||July||Started the production of Fan Motors.|
|October||TOSOK PRECISION (VIETNAM) and NIDEC TOSOK (VIETNAM) incorporated and established new "NIDEC TOSOK (VIETNAM) CO., LTD."|
|1999||October||Changed name to NIDEC TOSOK CORPORATION.|
|2002||March||Jointly established NIDEC SYSTEM ENGINEERING (ZHEJIANG) CORPORATION with NIDEC CORPORATION and NIDEC group companies.
|June||Established NIDEC TOSOK (SHANGHAI) CO., LTD.|
|2004||May||New construction of Head Office-Technical Center.
|September||Listed on the 1st section of the Tokyo Stock Exchange.|
|2006||May||Transferred fan motor business to NIDEC VIETNAM CORPORATION.|
|2007||December||Established Guangzhou Branch of NIDEC TOSOK (SHANGHAI) CO., LTD.|
|2009||April||Established NIDEC TOSOK SYSTEM ENGINEERING (ZHEJIANG) CORPORATION [NTKC].|
|August||Established NIDEC TOSOK AKIBA (VIETNAM) CO., LTD.
|September||Abolished Semiconductor assembly equipment business.|
|October||Established Bangkok Representative Office in Thailand.|
|2011||January||NTKC changed its name to NIDEC TOSOK (ZHEJIANG) CORPORATION [NTZC].|
|2012||February||Established NIDEC TOSOK UOGISHI (PINGHU)
|April||Transferred Ball Screw business to NIDEC SANKYO CORPORATION.|
|April||Transferred Measuring machine for semiconductor business to NIDEC-READ CORPORATION.|
|April||Reorganized into function oriented divisions.|
|April||Established NIDEC TOSOK PRECISION VIETNAM CO., LTD. [NTPV]|
|2014||May||Established NIDEC TOSOK de MEXICO S.A. de C.V.[NTMX]|
|2016||January||NTUC changed its name to NIDEC TOSOK DIE CASTING (PINGHU) CORPORATION [NTDC].|