1. The plaintiff's claim is dismissed.

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

1. Facts of recognition;

A. The Plaintiff is a company that manages and operates D, a sewage treatment plant in Seoul, and the Defendant is a company that engages in electrical motors, power generator, pump repair business, etc.

B. The Plaintiff has a large number of air conditioners and high-tension mortars, which are facilities that supply oxygen necessary for sewage purification by inserting air into a sewage treatment plant with high pressure. To maintain the performance of the said air conditioners and high-tension mortars and to extend the life of water, the Plaintiff is maintaining and maintaining the air conditioners and high-tension mortars on a regular basis every year.

C. On May 31, 2017, the Plaintiff announced the public announcement of the contract to replace the 1 sewage treatment plant A, B, and B 4 of the same sewage treatment plant, the decomposition and maintenance of air-conditioning and high-tension mortar A, the second sewage treatment plant B, and the announcement of the announcement of the tender [70 days (10 days for the above public announcement of decomposition and transportation, 50 days for maintenance, 50 days for on-site installation, and 10 days for trial operation)] between the successful Defendant and the successful bidder, on June 21, 2017, the contract price of 160,341,90 won, the contract period of 20, from June 21, 2017 to August 30, 2017, 2017, the project owner shall submit to the public announcement of the contract price of 30,0000,0000,0000,0000 3,000,000 3,000.

On June 26, 2017, the Defendant submitted to the Plaintiff an estimated process table with the following contents, and on June 29, 2017, the air exhausters No. 3 of the 1 sewage treatment plant and the high pressure mortars are below the Defendant.