2004. 11. 15 Tein-factory extension work (Kwangyang-Enterprise) 
2004. 12. 31 POSCO(Kwangyang) STL'/STR' & Duct for COG line 
2004. 11. 20 Outdoor store of PB (Steel-frame work) 
2004. 10. 31 POSCO(Kwangyang) STL'/STR' & Duct for ladle repair equipment of 2nd steel making 
2004. 11. 30 East suwon tollgate canopy 
2004. 08. 31 POSCO(Kwangyang) Minimil Hydroforming production 
2004. 08. 31 POSCO(Kwangyang) No.4 pipe rack 
2004. 07. 31 Hydroforming material process 
2004. 12. 30 STL'/STR' for fishing banks 
2004. 06. 10 Incheon thermal power plant Gas T/B building 2 part column 
1. 2. 3. 4.