The Plaintiff is a company established for the purpose of new and renewable energy business, design and supervision services related to solar power plants, maintenance and management services, and the Defendant (which was changed from the trade name before the change to the present trade name on March 7, 2014) is a company established for the purpose of solar power generation business.

The Plaintiff entered into a contract with the Defendant on the design and supervision services of solar power infrastructure (hereinafter “each service contract of this case”) with the content as set forth in the following table, and the individual contract of this case in the order of order is “the first contract of this case” or “the third contract of this case”).

On July 6, 2012, the installation project of solar power facilities in the size of 42 MW in the north East East Eastern area (hereinafter “the first project”) in Daegu-gun on February 18, 2013 (hereinafter “the second project”) 312,00,000,000 won in the 13mW on the west Coast 13mW located in the Nakdongdong-gun, Daegu-gun on November 18, 2013 (hereinafter “the second project”), 312,00,000 won in the 370,000,000,000 won in the Yan-gun, Chungcheongnam-gun, Madong-gun on November 6, 2013 (hereinafter “the third project”), and the Plaintiff shall request the Defendant to pay the value-added tax of KRW 370,00,000,000 in the aggregate (hereinafter “30,000,000 won in the instant service contract”).

On October 20, 2014, A sent evidence of content (Evidence 7) to seek payment of KRW 277,200,000 (including value-added tax) as the service price of the instant secondary contract, KRW 343,20,000 (including value-added tax) as the service price of the instant secondary contract, KRW 81,400,00 as the first intermediate payment of the instant secondary contract, and KRW 701,80,000 in total (including value-added tax).

On the other hand, on November 6, 2013, the date when the third contract of this case was concluded.