• 2012
  • · Selected as Exemplary Company for Green Growth (Presidential Green Growth Committee)
• 2010
  • · ESCO Project Award of Excellence, Ministry of Knowledge Economy
• 2008
  • · Grand Award recipient for Global Green Management for 5 consecutive years, 『Hall of Fame』
• 2004
  • · Republic of Korea’s Grand Award for Green Management
• 2000
  • · Pagoda Industry Award for Exemplary Company in Energy Reduction
• 1999
  • · 『Environmental Management Award』, Maeil Business Newspaper
• 1998
  • · Environmental Prize for 『Clear Water』 sector, Chosun Ilbo
• 1992
  • · Presidential Citation at the 20th annual World Environment Day

• 2014
  • · Safety & Health, Environment, Energy [OHSAS 180001, ISO 14001, 50001] certification (BV KOREA)
• 2013
  • · Health & Safety, Environment
  • · Quality Management System [OHSAS 180001, ISO 14001, 50001] certification (英 Lloyd 社)
• 2011
  • · Environmentally-friendly company (Ministry of Environment, 4th redesignation)
• 2010
  • · Greenhouse Gas Inventory Verification (英 Lloyd 社)
• 2000
  • · Certified as First Class Safety & Health Management Company (Ministry of Labor)
• 1998
  • · Quality, Environmental Management System [ISO 9002,14001] certification (英 BVQI)
• 1997
  • · Environmentally-friendly company (Ministry of Environment, #1 in the service industry)
  • * 2001 second, 2006 third redesignation