1. The defendant

A. As to Plaintiff A’s KRW 143,318,30 and KRW 119,578,80 among them, from October 19, 2013 to 23,739.

1. Basic facts

A. 1) Conclusion of the instant construction contract refers only to the Defendant-affiliated Public Procurement Service (hereinafter “Defendant”).

The construction work for extension of the Central Police School Life Center (including value-added tax) of KRW 18,805,354,000 (including estimated construction work on August 29, 2011) (hereinafter “instant construction work”).

(2) The bid notice was made on September 6, 201. The bid notice was made on the following grounds: (a) the Plaintiff Grand Construction, the Clim Construction, the Clim Construction, and the Suljin Comprehensive Construction (hereinafter referred to as the “Suljin Comprehensive Construction”) constituted a joint supply and demand organization (hereinafter referred to as the “instant joint supply and demand organization”) with a share of 50%, and was selected as the successful bidder on September 6, 201.

3) The instant joint contractors and the Defendant concluded each contract for construction works and modification with the terms and conditions as indicated below [Attachment 1] (hereinafter “instant construction contract”). The general term of each construction contract for the instant construction project is referred to as “instant construction contract.”

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B. This case’s construction contract applies.