1. The plaintiff's claims against the defendants are all dismissed.

2. Of the costs of lawsuit, the part resulting from the participation is Plaintiff.

1. Basic facts

A. On June 13, 2012, the Plaintiff’s Intervenor Co., Ltd. (hereinafter “Plaintiff’s Intervenor”)’s Intervenor Co., Ltd. (hereinafter “Plaintiff’s Intervenor”) entered into the instant supply contract with Defendant Co., Ltd. (former trade name: C Co., Ltd.; hereinafter “Defendant Co., Ltd.”) with the following major contents.

The contract amount: 437,770,000 won is to be paid in advance within five days after the conclusion of the contract and the submission of the contract performance guarantee insurance policy: 437,770,000 won equivalent to 10% of the contract amount; 87,540,000 won of the contract amount is to be paid in advance; 10,000 won of the intermediate payment to be 30% of the contract amount; 13,1310,000 won of the contract amount after the completion of the factory inspection; 30,000 won of the three intermediate payment to be paid in advance within ten days after the submission of the tax invoice; 437,770,000 won of the contract amount; 10,000 won of the contract amount to be paid in advance; and 10,000,000 won of the contract amount to be paid in the way of the contract performance guarantee; and 10,000,000 won of the contract amount to be paid.

On November 23, 2012, in order to obtain a contract performance guarantee certificate for securing the contract deposit under the instant supply contract, the Defendant Company: the Plaintiff’s Intervenor joining the Plaintiff, the purchase price of the insurance amount of KRW 4,377,00 among the Plaintiff; and the purchase price of the insurance amount of KRW 4,370,000 among the Plaintiff.