1958. 02. 05. Incorporation of Samil Enterprise Work
1965. 10. Military Supplying Business Registration (No. 29)
1968. 04. Civil work & Architecture Construction License (No. 32)
1976. 05. Increase of Capital (\50,000,000)
1985. 02. Business Registration (\320,000,000)
1985. 04. Registration of Housing Construction Enterprise(No.85-154)
1988. 04. The 1st Class of Electrical Work (No. 88)
1990. 03. Increase of Capital (\820,000,000)
1991. 03. Increase of Capital (\1,800,000,000)
1992. 03. Increase of Capital (\4,000,000,000)
1992. 05. Fire Fighting Work License (No. 91-172)
1992. 10. Listing on KOSDAQ (the 125th )
1993. 06. Increase of Capital(\6,200,000,000)
1993. 10. Completing of the Company Building ( Yoksamdong 773-5 , Kangnamgu Seoul)
1997. 02. Expanding of a Building(64.03㎡)
1998. 03. Get Certification of ISO 9001