2019
- 2019.10
- Obtained Certificate for ISO14001
2018
- 2018.01
- 01 Established China Corporation
2017
- 2017.10
- Established Hong Kong Corporation
- 2017.06
- Obtained license for industrial environmental facility construction business Merge a ELIMHYDRO CO.,LTD
2016
- 2016.04
- Obtained license for fire-fighting system installation business
2015
- 2015. 05
- Obtained license for civil engineering and construction business
2014
- 2014. 01
- Established Dongwon Architects & Engineers
- 2014. 01
- Acquired Ellim Hydro Co.,Ltd., water treatment company
- 2014. 01
- Certified new RO seawater desalination technology (by the Ministry of Environment)
- 2014. 01
- Signed the MOU to construct a biomass plant with LSIS Co., Ltd.
2013
- 2013. 12
- Invested in a corporation in Dubai
- 2013. 12
- Established a corporation in Saudi Arabia
- 2013. 11
- Awarded the Gold Medal in the Korea Tap Water Technology Competition 2013
- 2013. 08
- Selected one of the national research projects to develop the MBR method for phosphorus removal from wastewater treatment
- 2013. 07
- Registered electrical business
- 2013. 06
- Selected one of KB Kookmin Bank’s 500 Hidden Stars
- 2013. 05
- Certified a venture company
2012
- 2012. 07
- Registered construction business
- 2012. 03
- Renamed as Welcron Hantec Co., Ltd.
2011
- 2011. 08
- Registered machinery and equipment installation business
2010
- 2010. 11
- Became the largest shareholder of Kangwon B&E
- 2010. 08
- Registered a renewable energy facility installation company
- 2010. 02
- Rhee Young-kyu named the representative director
2009
- 2009. 05
- Awarded the USD 5 Million Export Tower
2008
- 2008. 07
- Listed on KOSDAQ
- 2008. 03
- Selected as the Partner Company of the Korea Institute of Industrial Technology
- 2008. 01
- Obtained license for industry environmental equipment business
2007
- 2007. 12
- Obtained ASME U stamp
- 2007. 10
- Registered a foreign investment company
2005
- 2005. 11
- Obtained China Special Equipment License Certificate
- 2005. 08
- Registered water contamination protection business
- 2005. 07
- Registered an Energy Service Company (ESCO)
2004
- 2004. 08
- Selected as the INNO-BIZ
2003
- 2003. 11
- Awarded the USD 1 Million Export Tower
2002
- 2002. 04
- Obtained ISO9001 Certificate
2001
- 2001. 04
- Moved to new facilities in Sihwa Industrial Complex
2000
- 2000. 06
- Selected as the promising export Small & Medium sized business in Gyeonggi-do
- 2000. 04
- Established the R&D center
1998
- 1998. 10
- Selected as one of Excellent Technology Companies by the Korea Technology Finance Corporation
1996
- 1996. 07
- Selected as one of Technology Development Demonstration Companies (by the Industrial Bank of Korea)
- 1996. 04
- Moved to new facilities in Icheon
1995
- 1995. 01
- Renamed as Hantec Engineering Co., Ltd. and conversed to a corporation
1994
- 1994. 01
- Established Dongbang Engineering