| 2005 | Yuan Jing Co. was Founded |
| 2006~2008 | NC and CNC Grinding Machines |
| 2011 | Expanded the Factory and Set the Air Conditioning In the Factory |
| 2012 | ZEISS CMM |
| 2013~2014 | TOYO Vertical Grinder , SHIGIYA Grinder , and STUDER universal cylindrical grinder |
| 2016 | Mahr Contour Measuring Station |
| 2017 | Another ZEISS CMM ; Inspection Range : X-1200mm , Y-1800mm , Z-1000mm |
| 2017 | More CNC Lathes and CNC Milling Machines |
| 2017 | Moved to A New Plant |
| 2018 | One STUDER Grinding Machine |
| 2019 | YJ obtained ISO 9001 : 2015 |
| 2020 | YJ obtained ISO 14001 : 2015 |
