2022 | The 35th | Korea Midland Power Co, LTD. |
The 34th | Incheon Housing and City Development Corporation Korea District Heating Corporation |
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2021 | The 33th | Korea Trade Insurance Corporation POSCO Lucidpromo |
2020 | The 32th | Korea Gas Technology Corporation Korea Asset Management Corporation |
2019 | The 31th | KEPCO ENGINEERING & CONSTRUCTION COMPANY.INC Korea Deposit Insurance Corporation |
The 30th | Incheon International Airport Corporation | |
2018 | The 29th | Korea Expressway Corporation |
2017 | The 28th | Incheon Port Authority, LOTTE Department Store, Korea Midland Power |
The 27th | Korea Marine Environment Management Corporation | |
2016 | The 26th | Hankook Tire, Hyundai Glovis, Korea Infrastructure Safety &Technology Corporation |
The 25th | Kolma Korea, Jeju Free International City Development Center | |
2015 | The 24th | Samchully Corporation |
The 23th | Namhwa Construction Corporation, Korea Gas Safety Corporation | |
2014 | The 22th | Hyundai Card, Busan Environmental Corporation |
The 21th | Jeju Technopark, Jeju Semiconductor | |
2013 | The 20th | Kolen Corporation |
The 19th | The Beautiful Foundation | |
2012 | The 18th | Shinhanlife, Douzone |
The 17th | Korea Agro-Fisheries Trade Corporation, Korea Deposit Insurance Corporation, Travelers'map Corporation | |
2011 | The 16th | GS Caltex, KB Kookmin Bank, Genin Corporation |
The 15th | Korea Housing Finance Corporation, Samsung Medical Center | |
2010 | The 14th | Shinsegae Corporation, Hanyoung Textile Printing Corporation, Korea Expressway Corporation |
The 13th | SK Holdings C&C | |
2009 | The 12th | KEPCO KPS, Johnson Cotrols Automotive Korea |
The 11th | Konyang University | |
2008 | The 10th | KT,Binggrae |
The 9th | SKT, Ktoto Corporation | |
2007 | The 8th | HanjinTransportationCorporation |
The 7th | Samsung SDI | |
2006 | The 6th | Hanjin Transportation Corporation |
The 5th | DB Insurance Corporation | |
2005 | The 4th | POSCO |
The 3th | LG Chem, Korea United Pharm Corporation | |
2004 | The 2th | Yuhan-Kimberly |
2003 | The 1th | Kyobo Life Corporation |