1. All of the plaintiff's claims are dismissed.

2. The costs of lawsuit shall be borne by the Plaintiff.

1. Basic facts

A. 1) The Plaintiff (hereinafter “Seoul City”) is the Seoul Special Metropolitan City Mayor (hereinafter “Seoul City”).

2) Of the construction of reinforced concrete among the construction of the same fire fighting boat, the part of the construction of reinforced concrete (hereinafter “instant construction”).

As to March 30, 2016, the subcontract agreement consisting of the contract price of KRW 924,00,000, and the contract price of KRW 924,000 from April 1, 2016 to January 31, 2017 (hereinafter “instant subcontract agreement”) and the contract bond of KRW 92,40,000 (hereinafter “instant subcontract”).

(1) The term “construction subcontract agreement (main sentence)” contained in the instant subcontract (hereinafter referred to as “construction subcontract agreement”) refers to the terms and conditions of the instant contract.

The main contents of the “statement of Execution and Performance” are as follows. ① The Plaintiff and the Defendant Jinjin Industrial Development mutually guarantee the performance of contract and the payment of construction cost by means of any of the following subparagraphs. 1. The contract execution guarantee amounting to 10% of the contract amount between the Plaintiff and the Defendant Jinjin Industrial Development under paragraph (1) of this Article is due to cash payment or delivery of a certificate of guarantee under paragraph (1) of this Article.