1995
- Selected as the excellent contractor / Developed Gwangju High-Tech Industry Park
1996
- Stone Tower Industrial medal
1997
- Award certificate / Contribution to stable residential life with rental house supply
1998
- Diligent tax payment / Minister of Finance and Economy
- Appreciation plaque / New construction of Jeil Bank Gwangju branch
- Award certificate by Gwangju metropolitan city mayor / the 2nd beltway
- Appreciation plaque by Gwangju metropolitan city subway construction headquarter Gwangju metropolitan city subway zone 1-3
- Announced as appointee of ’97 Excellent contractor / Minister of Maritime Affairs and Fisheries
- Aware certificate by the minister of Government Administration and Home affairs / West coast Expressway
- Award certificate by Gwangju metropolitan city mayor / Gwangju city subway line 1 zone 1~3
- Award certificate by Gwangyang city mayor / Selected as ’98 Excellent contractor
- Award certificate by Jeonnam governor / Protection of fraudulent construction and enhancement of competitiveness
1999
- Award certificate by prime minister of Government Administration & Home Affairs/Fulfillment of tax obligationy
- Designated as excellent contractor / Jeonnam governory
- Credit report / Corporate bill, credit ratingy
- ISO14001 certificationy
- Credit evaluation reporty
2000
- Quality assurance system certificate / ISO9001
- Appointment letter / Korean language promotion campaign
- Credit report / Corporate bill, credit rating
- Gold prize for 2000 Quality Control Contest
- Award certificate by Hampyeong goon governor / Treatment of sewage, livestock wastewater and human waste in Hampyeong
- Excellent quality management district / Gosi and Yoocheon districts
- Award certificate by Wonju Local Land Management Office / Contribution to development of Construction and Transport
2001
- Assigned as excellent contractor, notification notice
- Credit report / Corporate bill, credit rating
2002
- Excellent construction plaque by Korea National Housing Corporation / Masan Samgye apartment
- Environmental management system certification / KSA14001, ISO14001
- Excellent contractor appointment letter / Agricultural infrastructure construction
- Excellent contractor appointment letter / Gyeongbuk Pohan Education office
- Appreciation plaque by Shinan goon governor
- Industry-University Cooperation Agreement / Songwon University
- Credit evaluation report / Korea Housing Guarantee Gwangju branch
- Award certificate by the Minister of Construction and Transportation / Construction CALS · EC
- Award certificate by Iksan Local Land Management Office
2003
- KT subcontractor certification / KT Jeonnam office head
- Excellent contractor appointment letter / Agricultural infrastructure construction
- Environmental management system certification / KSA9001:2001,ISO9001:2000
- Civil engineering defect management association member certification
- Dun & Bradstreet – D&B
- Award certificate by the Minister of Environment
- Award certificate by the Minister of Construction & Transportation / Contribution in development of construction and transportation works
- Award certificate by Jeonnam governor / Contribution in local economy development Sampo-Sanho
- Award certificate by Gwangju metropolitan city mayor / City subway line 1
2004
- Excellent contractor appointment letter / Agricultural infrastructure construction
- Excellent contractor plaque for agricultural infrastructure construction / Bongjung · Yeongma · Naeri · Woondae district
- Excellent contractor appointment letter / Jeonnam governor
- Award certificate by Gwangju metropolitan city mayor
- Award certificate by the prime minster as acting president / Gwangju subway construction
- Credit report / Corporate bill, credit rating
- Encouragement letter from Korea Land & Housing Corporation / Excellent site management in Yongin Bora
- Appreciation plaque by the head of Dong gu office, Pusan metropolitan city
- Award certificate by Gwangju metropolitan city mayor / The 2nd belt way
- Award certificate by the head of Jeonnam Post office
- Award certificate by Gang Cheol Gyu of Fair Trade Commission
- Listed Agricultural infrastructure works / ’04 National Quality Circle Contest
2005
- Excellent contractor appointment letter / Agricultural infrastructure construction
- Excellent contractor appointment letter (road and transportation facility categories) / Gwangju metropolitan city mayor
- Excellent contractor appointment letter (Geumma – Yeeonmudae) / Iksan Local Land Management Office
- Award certificate by Gwangju metropolitan city mayor / Promotion of local physical education
- Appreciation plaque from Yesan goon governor / Ddansan bridge construction work
- Appreciation plaque from Hwasoon goon governor / Fulfillment of local tax obligation
- Appreciation plaque from Gangjin National Scholarship Foundation / Participation in promoting human resource development
- Award certificate by Jeonnam / Contribution in development of Jeonnam construction business
2006
- Service mark registration certificate / Korea Intellectual Property Office head
- KT excellent contractor certificate / KT property development team head
- Award certificate by Suwon mayor / Establishment of Suwon Welfare Center for the disabled
- Award plaque by Ulsan metropolitan city / Development of local construction industry
- Appreciation plaque from Korea Land Trust / Miryoong dong and Miah market projects in Goonsan
- Award certificate by president Roh Moo Hyun / Construction of national road 27 – Kim Pan Joong
- Award certificate by the Minister of Construction & Transportation
2007
- Appreciation certificate for donation to Baekwoon Scholarship Foundation / CEO of Baekwoon Scholarship Foundation
- Osan Segyo (treated as Gumgwang Engineering & Construction) / the head of Korea Land & Housing Corporation Osan new city team
2008
- Certificate of merit by Wando governor / Completed Nohwa-Bogil construction
- Road transportation facility, civil engineering facility category at Korea Civil engineering · Construction Award
- Grand prize / Maeil Business Newspaper, Architectural Institute of Korea, Korean Society of Civil Engineers
- Award certificate by the Minister of Land, Transport and Maritime Affairs
2009
- Excellent contractor plaque by Korea Rural Community Corporation / Hongbo district Gyeolsung zone 3
- Excellent contractor appointment letter / Jeonnam
- Award certificate by Republic of Korea National Red Cross / Contribution in development of Red cross projects
2010
- Excellent contractor appointment letter / Korea Rural Community Corporation
- Excellent contractor plaque from Korea Rural Community Corporation / Gwangui district and Oma distric
2011
- Award plaque by Gwangju metropolitan city mayor / Happy and creative city Gwangju – Kook Yoon Sung
2014
- Award certificate by Jeonnam governor / Contribution to coexistence and cooperation
2015
- Award certificate by Iksan Local Land Management Office of Ministry of Land, Transport and Infrastructure Haenam – Namsongcheon bridge in National road line 13
2017
- Appreciation plaque by Construction Guarantee Cooperative / CEO of Construction Guarantee Cooperative
- Appreciation plaque from Hampyeong governor / Development of abandoned coastal land
2018
- Excellent contractor plaque by Korea Rural Community Corporation / Mihak district drainage improvement work