- July. 2018
E-Mart engine oil OEM production
- May. 2018
Acquired Ulsan Plant (2nd plant) (formerly Aspac Oil Co., Ltd.)
BP KOREA (Castrol) Engine oil OEM production
- Dec. 2017
The 54th. Presidential Industrial Packaging Award on Trade Day
The 54th. Won a 5 million dollar Export Tower on Trade Day
- March 2017
The company is awarded Prize of President of National Tax Service on the Taxpayer's Day.
- Nov. 2016
The company makes a business agreement with Unitech Kühlschmierstoffe GmbH
- Apr. 2015
Vietnam branch is established.
- Mar. 2015
The company exports cutting oils for manufacturing metal case of smart phone to Samsung Electronics, Vietnam for the first time in Korea.
- Oct. 2014
The company is awarded KS Certification Grand Prize for World Standards Day
- Nov. 2012
The company makes an agreement on the guideline on hazardous chemical substances. (Federation of Korean Metal Workers' Trade Union)
- Oct. 2012
The company develops non-metal processing oils.
- Jul. 2010
Changed the name of DH Chemicals to Donghomoolsan Co., Ltd.
- Feb. 2010
The company develops oils for drawing cans which are used for secondary cell battery
- Jan. 2007
The company introduces OLEX brand and registers trademark.
- Dec. 2005
The company achieves sales of 10,000 drums/year for a single item of punching oil
- Sep. 2005
The company develops grinding oils for bearing
- Oct. 2004
The company acquires ISO 9001 and ISO 14001 certifications
- Sept. 2003
The company develops punching oils for nano-plasma.
- Dec. 2002
The company renovates factories and the research center.
- Feb. 2002
The company invests in SANGHAI TECTYL OIL & CHEMICALS CO., LTD.
- Aug. 2000
The company acquires KS mark for the industrial lubricants (KSM2126, KSM2127, and KSM2129) (hydraulic oil, machine oil, gear oil)
- Dec. 2000
The establishment of R&D center is approved.