1. The Defendant’s KRW 583,155,90 for the Plaintiff and KRW 6% per annum from June 27, 2017 to January 24, 2019.

(b) the facts of the basis;

A. The Plaintiff is a company that runs the business of manufacturing sloping water and leisure season, and the Defendant is a company that runs the business of selling aggregate.

B. Conclusion of construction contracts

5. Date of completion: Terms and conditions for payment on April 30, 2016 * Contract gold (excluding value-added tax): 200 million won after installation of static machinery of KRW 200 million * Balance (excluding value-added tax): 870,000,000 won per month in the month following the following month of the production date of original trial (the condition under which the company's claim is transferred), among the estimates attached to the construction contract attached to the letter of construction contract (the condition under which the company's claim is delivered by "A"), the main estimated scope of the estimate shall be limited to Class I sandd plant Class II and the construction work site of water treatment facilities, driving protection room, medicine room, and heading Ⅲ, Ⅴ automatic valves, electric power panel and water processing facility, electric power panel and distribution facility, and equipment for treatment of sewage and equipment, and the installation of miscellaneous equipment and various general management expenses, excluding the installation of Gap sandd plant and other general management expenses, and the installation of Handy and other general management expenses, X.

1. Various environmental-related facilities, authorization, and permission issues;

1. One year after a trial run;

2. Basic soil and engineering works.

3. Primary electric and water supply facilities;

4. On February 1, 2016, the Plaintiff entered into a contract with the Defendant for the construction of waterproof and thermal temperature facilities (hereinafter “instant construction contract”) with a construction cost of KRW 1.397 billion (including value-added tax) installed on the instant facilities for manufacturing sand from the high seas (hereinafter “instant facilities”). The main contents of the contract are as follows: (a) the Plaintiff entered into the instant construction contract with the Defendant for the construction of sandbds, slope equipment and water treatment equipment (hereinafter “instant construction contract”; and (b) the construction under the said construction contract are as follows.

C. By June 26, 2017, the Defendant paid to the Plaintiff KRW 750,000,000 as construction price, and additionally paid KRW 20,000,000 each five times from August 2018 to December 2018.