2016 ~ 2017
- 2017 Acquired TUV certification for AC power electronics capacitor
- 2016 Acquired TUV certification for Low-Voltage power capacitor
2003 ~ 2012
- 2012 Acquired CQC 10002049548 certification.
- 2006 Acquired KSA 14001/ISO 14001 certification.
- 2004 Registered the utility model no. 0355760 (capacitor cover)
- 2003 Established a factory in Thailand.
- 2003 Acquired KSA 9001/ISO 9001 certification.
1996 ~ 2001
- 2001 Acquired VDE certification for capacitor for electric apparatus.
- 1998 Acquired TUV certification for capacitor for electric apparatus.
- 1997 Acquired KSA 9002/ISO 9002 certification.
- 1996 Acquired UL certification for capacitor for electric apparatus.
1977 ~ 1984
- 1984 Acquired KS certification (capacitor for electric apparatus, low-voltage Power capacitor).
- 1983 Started of the production for low-voltage power capacitor. Started of the production capacitor for electrica apparatus.
- 1982 Produced the first metallized film for capacitors in Korea.
- 1977 Produced the first metallized paper for capacitors in Korea. Established Eunsung Industrial Co., Ltd in Korea.