2022

• - Awarded recognition for the most valuable taxpayer from Anyang City
• - Anyang City Selection of Honest Taxpayers
• - Gyeonggi-do Selection of Honest Taxpayers
• - Acqusition of ISO 45001

2021

• Establishment of Road & Highway Division

2020

• - Jeong Byung-yul. Inauguration of the CEO
• - Gold Tower Order of Industrial Service Merit

2019

• - Anyang City Selection of Honest Taxpayers
• - Selected by Hidden Champion

2018

• - Registration of professional agency as to Underground Safety Impact Assessment
• - Work-life balance campaigns participate
• - Certification of Excellent Companies in Anyang

2017

• - Awarded recognition for the most valuable taxpayer from Anyang City
• - Registration of engineering activity subject(water and sewage planning engineering)
• - Selected by Certificate of merit for superior work environment
• - Ministry of Trade, Industry and Energy approved the business reorganization plan

2016

• - Registration of agency as to the transportation impact assessment

2015

• - Registration of agency as to anti-diaster measures
• - Registration of engineering activity subject(urban planning engineering)
• - Registration of a company specialized in electrical construction supervision

2014

• - Registration of engineering activity subject (water-purity control)
• - Registration of research and development services
• - Registration of professional agency as to safety procedures of railway transportation
• - Selected as the best company by the Small and Medium Industry Promotion Corporation

2013

• - Registration of agency to evaluate feasibility of public transportation facility development project
• - Aqusition of the certification of women enterprise
• - Aqusition of the certification of medium enterprise
• - Registeration of an engineering activity subject (the development of water resources)
• - Selected as a company to work for in 2013
• - Registration of professional agency as to safety procedures : bridge & tunnel

2012

• - Selected as Best company by KB Kookmin Bank
• - Ground breaking ceremony for a construction of seohyun building
• - Relocation of seohyun building

2011

• - Acqusition of Inno-biz Certification
• - Registration of road & airport and transportation

2010

• - Registration of public survey

2009

• - Establishment of technology R&D Institute
• - Registration of oversea engineering service provider and civil engineering construction

2008

• - Registration of engineering activity subject (Geological and ground engineering,
• Soil Mechanics and Foundation engineering, Structure engineering, Surveying
• Geo-Spatial Information)
• - Relocation of headquarter to Gasan-dong, Geumcheon-gu, Seoul
• - Acqusition of ISO certification(ISO9001, ISO4001),
• - obtained business registration as venture enterprise

2007

• - Establishment of Seohyun Engineering Co.,Ltd
• - Registration of engineering activity subject(Railway engineering)