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Before 2006Seoul Subway Line 7 (C720) (Alteration design according to waterproofing method) |
| 구분 |
Alteration design |
| 발주처 |
Seoul Metropolitan Govenment Office of Subway Construction |
| 시공사 |
Hanjin Construction (now Hanjin Heavy I & C) |
| 사업기간 |
February 24, 1997 ~ June 24, 1997 |
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