- 2017
- ISO14001 Certification
- Contracted Brake System and Coupler for High Speed Train EMU 250/300 (130 cars)
- Contracted Brake System for Ecuador Quito (108 cars) with CAF
- 2016
- Turkey JSC (Frensan A.S.) established
- 2014
- YUJIN Brazil Railway Equipment Ltda. established
- Chairman Jeong-ja Kim awarded the Gold Tower Order of Industrial Service Merit
- Certification of IRIS (International Railway Industry Standard)
- 2012
- Certification of Green Technology (Ministry of Land, Infrastructure and Transport)
- 2011
- Certification of Safety Integrity Level (SIL) 4 (Brake Control System YB)
- 2010
- Extended the 1st Factory (Factory and New Office Building)
- 2008
- Established Suzhou YUJIN Ltd. in China
- Established 2nd Factory for Industrial Compressor Division in Ansan
- 2007
- Silver Tower Order of Industrial Service Merit
- 2006
- Supply of brake system for Honam/Jeonra Line High Speed Train
- First export of YUJIN brand brake system for Brazil Central EMU
- 2005
- JEIL Rollingstock Co., Ltd. established
- 2003
- Industrial Compressor Division established
- 2002
- Designated as developer and supplier of brake system for KORAIL tilting EMU
- 2000
- YUJIN Rollingstock Co., Ltd. established
- Independent development of screw air end for railway vehicles
- 1999
- Selected as lead company for brake system in Korea Standard LRV development project
- 1998
- Selected as lead company for brake system in Korea Standard EMU development project
- 1996
- Selected as lead company for brake system in Korean High Speed Train development project
- 1994
- YUJIN Electric Ltd. established
- 1988
- Industrial Medal Award (Presidential Decree No. 2062)
- 1985
- Corporate R&D Institute Recognition (Ministry of Science and Technology No. 565)
- Designated as promising small business (Small Business Promotion 85-653)
- 1980
- Development of air brake system for railway vehicles
- 1972
- YUJIN Machinery Ltd. founded (43rd anniversary 10/28)