- 2018 ~ 2000
2018.05 ISO:14001:2015 certification
2018.05 ISO:9001:2015 certification
2017.11Type approval of Ministry of Land Transportation
2017.02Safety Integrity Level 4 (SIL4) certification
2011.02Registration of supervisory business
2006.12Received presidential industrial commendation (establishment of light train in Gyeongbu Line).
2005.05Venture Business Certification
2005.02Acquired Certification of Technical Innovative Small
2001.09 Acquired ISO 14001 certification in railroad signal area.
- 1999 ~ 1972
1999.09Received presidential industrial commendation
1998.06Acquired ISO 9001 certification in railroad signal area.
1997.11Established Technology Laboratory.
1996.07Transfer of jurisdiction of Yookyung Control Co. Ltd.