| August, 1985 | Parts Seiko was founded in Ohashi, Matsudo City, Chiba Prefecture |
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| April, 1996 | Our head office was relocated to Togasaki, Misato City, Saitama Prefecture |
| July, 2000 | Parts Seiko to launch an overseas independent entity, Hong Kong Parts Co., Ltd, in Hong Kong |
| December, 2001 | A Chinese Factory was opened in Longgang District, Shenzhen City |
| April, 2003 | Acquisition of ISO9001:2000 certification |
| July, 2003 | Parts Mekki became a subsidiary |
| December, 2003 | Our head office was relocated to Shinwa, Misato City, Saitama Prefecture |
| March, 2008 | Acquisition of ISO14001:2004 certification |
| May, 2008 | Completion of the 2nd factory in China |
| August, 2008 | A second factory was opened in Shinwa, Misato City, Saitama Prefecture |
| December, 2008 | Merging with the subsidiary company, Parts Mekki and transferred over all its business to the newly established surface treatment business department |
| June, 2010 | Completion of the first factory in Shirakawa, Fukushima Prefecture |
| September, 2011 | Parts Seiko Metal Products (Shenzhen) Co., Ltd with takes full ownership |
| December, 2011 | Parts Seiko to launch Parts Seiko Philippines, Inc. |
| October, 2012 | Suzhou Office in Suzhou City is opened |
| May, 2015 | Shirakawa sales office was opened in Shirakawa factory, Nishigo village, Fukushima Prefecture |
| October, 2015 | Kyushu sales office was opened in Fukuoka Prefecture |
| April, 2016 | Completion of the first factory in Kagoshima |
| April, 2017 | Completion of the second factory in Kagoshima |
| May, 2017 | Completion of the third factory in Philippines |
| January, 2018 | Completion of the inspection building in Kagoshima |
| February, 2018 | Acquisition of ISO14001:2015 certification |
| March, 2018 | Acquisition of ISO9001:2015 certification |
| October, 2019 | Completion of the second factory in Shirakawa, Fukushima Prefecture |
| March, 2021 | Parts Philippines, Inc changed its name to Parts Seiko Philippines, Inc. |
| April, 2021 | Appointed Kenji Ota as our Representative Director and Chairman |
| April, 2021 | Appointed Yuichiro Ota as our Representative Director, President and CEO |
| December, 2021 | Completion of the third factory in Kagoshima |
发驰精工金属制品（深圳）有限公司