2000-01-07
Established the adjacent Urban, Architecture Research Institute

1999-06-04
Acquired License for Oversea Construction Business (No 134)

1999-02-25
Registered for Design Company of Electric Power Facilities at Korea Electric Engineers Association

1998-09-25
Acquired ISO 9001 Certification

1998-06-26
Registered for General Design & Professional Supervision Services of fire fighting facilities at Gangnam Ward Fire Station, Seoul

1997-04-28
Registered for General Electric Supervision at Korea Electric Engineers Association / Seoul Metropolitan Government

1997-02-25
Registered for engineering company at Korea Engineering and Consulting Association (No 10-566) a. Soil, Foundation, Civil Structure, Building Structure, Mechanical, Electrical, and HVAC b. Information and Communication c. Fire Fighting

1996-08-14
Registered for professional company of general 3rd party surveillance at Ministry of Construction and Transportation

1993-01-01
Established CM (Construction Management) department

1989-01-01
Established Guam Yooshin Corporation, USA

1987-12-01
Changed the former company name (Samhwa) to Yooshin A/E, Inc.

1981-08-25
Converted to Business Corporation

1980-05-15
Began design service for U.S army, Corps of Engineers, Far East District (FED)

1979-01-10
KCM International founded in Korea, joint-venture firm between Yooshin A/E and KCM international Inc. in Seattle, USA.

1978-01-05
Samhwa A/E was established (former company name)