- 2001. 06.
  DONGAH celebrates its 30th anniversary.
- 2003. 06.
  Electric Insulator  Plant established
- 2004. 05.
  Qingdao China Tube Plant established
- 2005. 03.
  Press Plant established
- 2007. 02.
  Qingdao DTR established
- 2009. 01.
  Acquisition of  DTR VMS(UK)