1. The plaintiff (Counterclaim defendant)'s main claim is dismissed.

2. The Plaintiff (Counterclaim Defendant) is KRW 11,457,393, to the Defendant (Counterclaim Plaintiff).

1. The following facts do not conflict between the parties, or can be acknowledged by taking into account the following facts: Gap evidence 2, Gap evidence 3-1, 2, Gap evidence 4, Eul evidence 5, Eul evidence 1, Eul evidence 2-1, Eul evidence 2-5 and Eul evidence 2-1, the result of this court's verification, the result of the entrustment of appraisal to the future safety DNA Co., Ltd., the result of supplemental appraisal entrustment, the result of fact inquiry, and the whole purport of arguments.

In the Asan City, the Plaintiff operating the food service company “C” in the Asan City B entered into a contract for the supply and installation of the gas service facilities with the Defendant who is engaged in the production and installation of the gas service facilities on three occasions, and the Defendant supplied and installed the gas service facilities at the “C” hot spring resorts operated by the Plaintiff according to the said contract.

① Total amount of KRW 60,00,000 (excluding value-added tax) in total, including automatic washing machines, and freezing and freezing storage on December 26, 2012 (excluding value-added tax) 2.2.2. 13.2.2. 13.2. 3. 3. 3. Total amount of KRW 24,920,50,000 (excluding value-added tax), such as a misunderstanding and food equipment, etc. on February 13, 2013 (excluding value-added tax)

B. The Defendant supplied and installed all of the kitchen facilities, etc. under each of the above contracts to the Plaintiff. The Plaintiff paid the Defendant a total of KRW 30,000,000 on January 2, 2013, 2013, and KRW 40,000,000 on February 13, 2013, and KRW 10,000,000 on February 18, 2013, and KRW 10,000 on February 27, 2013, and KRW 20,000 on March 6, 2013, and KRW 10,000 on March 11, 203, and KRW 20,000 on April 20, 2013, and KRW 10,000 on April 13, 200,000.

C. Around March 14, 2013, the Plaintiff returned to the Defendant the total amount of KRW 6,764,00,000, such as the Kenya, the electric water tank, and the sprink, etc.

On the other hand, the following defects have occurred in the process of the supply and installation of main facilities by the Defendant.

(2) Defects in heat facilities (excluding 1,680,092 won for the construction of a defect, 1,680,092 won for the installation of a defect, and 200,000,000,000) (3) Defects in ventilation pipes, exchange equipments, etc. (excluding 2,072,231 won for the construction of a defect, 200,000,000,000)

2. The principal claim.