1990.02.15

· Established

1992.03.27

· STX Engine Inc. Partnership

1993.08.10

· Ssangyong automobile Inc. Partnership

1994.07.15

· STX Engine excellent supplier selected

1997.04.22

· Ssangyong automobile Inc. excellent supplier selected

1998.10.23

· Rubber Compensator development (KR, GL, LR, DNV, ABS, BV Type Approval)

2002.03.10

· Kookmin Bank as a promising SME registration

2003.03.12

· ISO 9001 (URS) Certification Acquired

2006.07.01

· Changed (Dong Yang Special Rubber → Dong Yang S&T)

2009.09.15

· Flexible Coupling unique model development

2010.02.12

· RINA, CCS, NK type approval