| 1990 | May | Establishment of DongWoo Machinery |
|---|---|---|
| August | Registered the patent (Bit for a Hamma Drill Body of a Ground Excavator) No. 231472 | |
| 2005 | January | Registration of utility model right (Bit for Hammer Drill) No. 373395 |
| May | Registration of utility model right (A Clust Drill) No. 352591 | |
| August | Registration of utility model right (A Clust Drill) No. 393755 | |
| 2006 | May | Applied the patent (A Clust Drill) No. 10-0585396 |
| August | Application for registration of similar design (Bit for a Hammer Drill Body a Ground Excavator) No. Design registration (Bit for a Hammer Drill Body a Ground Excavator) No. |
|
| 2007 | April | Registered the patent (A Clust Drill) No. 10-0715431 |
| 2008 | March | Moved and expanded to HwaSeong Industrial complex |
| 2010 | June | Registered the patent (Apparatus for excavation) No. 10-0967912 |
| 2011 | July | Establishment of DongWoo Machinery Co.,LTD. |
| 2012 | May | Registered the patent (Apparatus for excavation) No. 10-1145189 |
| October | Registered the patent (A Cluster Hammer) No. 10-1192120 | |
| November | Registered the patent (A Swivel for a Cluster Hammer) No. 10-1204526 | |
| 2014 | November | Registered the patent (Ground Excavating Apparatus) No. 10-1460435 |
| 2015 | May | Establishment of GwangMyung Branch |
| 2017 | February | Establishment of DongWoo Machinery Co.,LTD Research and Development Center |
| September | Registered the patent (An Air Hammer for Excavation) No. 10-1778459 |
