2015
- Elevator Production of door separation prevention device
2013
- O-yang Tech Geochang factory construction
- Subsidiary company O-daeyang Global Geochang factory construction
- Escalator Expansion of item business
2011
- Selected as INNO-BIZ company by technology innovation type
2008
- Moved the 1st Factory (Chungli Factory) to the new factory
2006
- Acquired ISO 9001 certificate
- Unmanned delivery system business deal opened
2004
- Established Powertech Trading Co. (Doosan Heavy Industries & Construction Co., Ltd.)
2002
- Registered utility model (No. 0294534)
Elevator or Escalator Wheel structure
-Registered utility model (No. 0295721)
Guide wheel assembly for an elevator having an integral shock absorber
2014
- Solar generation apparatus installations Production and installation
- Nonsan-ore solar power plant / Chaegwang-ri, solar power plant
- Sogang-sun power plant through / Taean - Icarus Photovoltaic Power Plant
2012
- Solar generation apparatus installations New production
(2.1mw of Taean Anmyeondo in Chungnam)
2009
- Selected as a management innovation small business company
2007
- 2nd Factory (Buk-myeon) Construction
- Manufacture of foamed aluminum soundproof panel
2005
- Registered utility model (No. 0384137)
Elevator’s Guide roller support and vibration absorption device
2003
- Otis Elevator Registered as a partner company
2001
- Changwon College Consortium Agreement
- Otis Elevator Registered as a partner company
