History

2010 ~ 

• 2016. 02  Patent (Lubricant dehydrating device using vacuum)
• 2015. 09  Commissioning for 44MW Diesel Power Plant (Iraq)
• 2015. 07  Pre-commissioning, commissioning, O&M for 457MW Gas Turbine Power Plant
                  (Algeria)
• 2014. 11  Pre-commissioning, commissioning, O&M for 500MW Gas Turbine Power Plant
                  (Iraq)
• 2014. 10  Patent (The oil purifier)
• 2014. 07  Patent (The water-soluble cutting oil and washing water purifier)
• 2012. 11  Establishment of Zedal CK Inc. Busan (Oil purifiers, flushing machine)
• 2012. 03  Electric installation and flushing in STX ocean (Dalian, China)
• 2011. 10  Pre-commissioning, commissioning, O&M for 900MW Diesel Power Plant (Iraq)

2000 ~ 2009

• 2009. 10  Establishment of Shandong Weihai Sejin Marine Technology Limited
                 (Manufacturing marine fittings, flushing equipment, etc.)
• 2008. 10  Establishment of Qingdao subsidiary (Hyundai shipbuilding subcontractor)
• 2008. 10  Establishment of Dalian Zedal Marine Technology Limited
                 (STX offshore & shipbuilding subcontractor)
• 2007. 07 Chinese patent (Water soluble cutting oil, cleaning oil)
• 2007. 06  Establishment of Zedal Inc.
• 2006. 09  Chinese patent (Integrated oil purifier)
• 2005. 07  Chinese patent (Impurity purifier)
• 2001. 11  Establishment of Heilongjiang Harbin subsidiary factory

1987 ~ 1999

• 1999. 12  Establishment of Tianjin Zedal Oil Purifying Facility Limited
                 (Manufacturing oil purifier, oil-water separator, water treat)
• 1994. 03  Incorporation of Handok Oil Purifying Industry
• 1991. 05  Type approval of marine equipment factory:
                  The Korea Maritime and Port Administration, Korea Classification
                  (Excreta treatment facility, Incinerator, LO/FO purifier)
• 1987. 03  Establishment of Handok Oil Purifying Inc. (Manufacturing oil purifier)