1. The defendant's appeal is all dismissed.

2. The costs of appeal shall be borne by the defendant.

Purport of claim and appeal

1..

1. Facts of recognition;

A. The Plaintiff A is a person who engages in construction business under the trade name of “D,” while the Plaintiff B (hereinafter “Plaintiff B”) is a corporation whose purpose is soil construction business, etc.

The E Co., Ltd. (hereinafter “E”) is a corporation with the purpose of real estate development projects, etc. without distinction before and after the change of name, and the defendant is referred to the E representative director G.

B. The Plaintiffs received from E civil engineering works necessary for the development and sale of the electric source housing complex (hereinafter “instant construction works”) at the Griri-si level, and performed from January 2014.

C. The Plaintiffs, E, and the Defendant concluded the following contracts:

(C) 1: (1) No. 1: (2) No. 1: (3) No. 1; (2) No. 1; (3) No. 1; (4) No. 1; (5) No. 1; (5) No. 1; (2) No. 1; (3) No. 1; (4); (5) No. 1; (4) No. 1; (5); (6) No. 1; (4) No. 1; (5); (5) No. 1; (4) No. 1; (5; (5) No. 1; (5); and (6) No. 1; (4) No. 1; (5); (5) No. 1; (4); (5) No. 1; (5) No. 6060, May 9, 2016; and (5) No. 5000, Jun. 6, 2016;

D. The plaintiffs, E, and the defendant.