1986.03 Established1986.07 Authorized production of Noise filters by Korean Ministry of Commerce and Industry.1987.03 UL, CSA, VDE, TUV,SEMCOapproved for EMI/EMC Noise Filter1991.11 Designated as a Meritorious Company by Korean Ministry of Commerce and Industry. 1992.02 China WeihaiDong iltechnology established1997.07 Listed on KOSDAQ.(32960)1998.07 KS A9001/ ISO9001Certified1998.11 Ceramic business launched.1999.10 Won a grand prize in electronic part contest by Korean Ministry of Commerce and Industry2003.10 QS9000Certified2008.04 ISO/TS16949Certified.2008.10 KGMP Certified(Ultrasonic Scaler, Piezo-Surgery)2009.01 Obtained CE Certification(Medical Devices)2009.04 ISO 13485 Certified(SGS)2009.12 Made Annual Avenue US$52milion