1. The part against the defendant among the judgment of the court of first instance is revoked, and each of the plaintiffs' claims corresponding to the revoked part are filed.

1. Basic facts

A. A. The Plaintiffs (general contract and the first contract) around November 2007, and the Plaintiff Newdong Construction Co., Ltd. (hereinafter “Plaintiff Newdong Construction”) (hereinafter “Plaintiff Newdong Construction”).

A) 51% and Plaintiff Jinjin Construction Industry Co., Ltd. (hereinafter referred to as “Plaintiff Jin Construction”).

(2) The Plaintiffs were selected as eligible persons by participating in the bid on the construction of the railway for the railway for the railway restoration project (hereinafter “the instant construction project”), which was promoted by the Defendant, at the time of the investment of 49% by each of the investment of 49% and the joint supply and demand organization as a representative for the construction of the Plaintiff Newdong.

3) On December 31, 2007, the Plaintiffs are the general conditions of the construction contract stated in the attached Form stating the general conditions of the construction contract (hereinafter “general conditions of the construction contract of this case”) between the Defendant and the total construction period from December 31, 2007 to January 30, 2010, the total construction cost of which is KRW 20,175,715,000 for the instant construction project.

B. The Plaintiffs and the Defendant concluded a comprehensive contract and a comprehensive contract by means of a long-term continuing construction contract (the total cost determined by a successful bidder, etc. shall be additionally stated and each number of different contracts shall be entered within the budget of the pertinent year) as indicated in the table below, with the period of construction on the same day until December 31, 2007 (the date of the pertinent contract) and the contract amount of KRW 10,000,000. The contract was modified as indicated in the table below, while the instant construction is underway, due to changes in design, price fluctuation, etc. (hereinafter each change contract is specified with the number of each change contract), and each change in the overall contract and the overall contract was modified as indicated in the table below (the final contract).

(1) The total construction cost of the comprehensive contract for each type of car contract as of the date of original classification is calculated on December 31, 2007; the total construction cost of the comprehensive contract for each type of car contract is calculated on December 31, 2007; and the total construction cost of the comprehensive contract is calculated on January 30, 2010; the second contract on January 30, 2010; the second contract on February 19, 2008; the second contract on February 19, 2008; and the second contract on December 2-1, 2008.