| Jun. 1969. |
Established DongAh Manufacturing Corp. |
| Nov. 1976. |
Started producing gaskets with Uchiyama Manufacturing Corp. for rubber gaskets |
| Dec. 1993. |
Technical cooperation with Japan Metal Gasket for gasket technology |
| Dec. 1996 |
Established Dong Won Corporation. |
| Oct. 1997. |
Acquired ISO 9001 Certification(SMICC) |
| Mar. 1999. |
Acquired QS 9000 Certification (by KSA-QA Korea) |
| Jul. 2002. |
Established Qingdao DongAh Manufacturing Corp. (China) |
| Jun. 2003. |
Established DongAh Manufacturing Corp. Ulsan Factory. |
| Oct. 2003. |
DongAh Uchiyama transferred to Ulsan, Korea |
| Mar. 2004. |
Acquired ISO/ TS 16949 : 2002 Certification(TUV) |
| Oct. 2004. |
Established SukJin Precision Corp. |
| Mar. 2005. |
Acquired ISO 14001 Certification(TUV) |
| May. 2005. |
DongAh Uchiyama transferred to Yeongdong, Korea |
| Oct. 2006. |
Established DMC America Inc. |
| Dec. 2006. |
Established DMC Automotive Pvt. Ltd. (India) |