February, 1993   Daehan Industrial Electronics Co., Ltd. established
 May, 1993   Established subsidiary R & D Center
 August, 1993
  Developed repeaters for AM/FM radio
 March, 1995
  Establishment of manufacturing facility approved
 August, 1995
  Selected as a promising small & medium enterprise
 November, 1996   Selected as enterprise of defense industry
 August, 1997
  Developed PCS F/O repeaters (for the first time in Korea)
 April, 1998   Enrolled as venture business (in SMBA)
 September, 1999
  Started CDMA repeater business in China
 September, 2000
  Obtained ISO-9001 certificate
 November, 2000   Changed company name into SourceTel Co., Ltd.
 November, 2001
  Exported CDMA repeaters to China
 February, 2002   Established branch office in Beijing
 August, 2002
  Established A/S center in Gwangjou