1. The Plaintiff, Defendant U.S. Co., Ltd., and Defendant U.S. Co., Ltd., from January 10, 2017 to Defendant Co., Ltd.

1. Basic facts

A. The Plaintiff’s status Korea National Housing Corporation (the Plaintiff was merged with the Korea Land Corporation on October 1, 2009, and the Plaintiff comprehensively succeeded to the rights and obligations of the Korea National Housing Corporation; hereinafter collectively referred to as “the Plaintiff”) is a project undertaker who constructed and sold the Plaintiff’s forest-speed village 1, Yongsan-gu, Busan Metropolitan City, 16, nine apartment complexes 9-dong, 16 (hereinafter referred to as “the instant apartment complex”).

B. 1) The entry of “stock company” in the name of the new stock company (hereinafter referred to as “stock company”) is entirely omitted.

(2) In order to construct the apartment building of this case, Defendant Crified Construction Co., Ltd. constitutes a joint supply and demand organization with a representative for new construction works, and entered into a joint supply and demand agreement with each of 80% and 20% of the investment ratio of new and Defendant Crified Construction (Article 6 of the above Joint Supply and Demand Convention provides that “The members of the joint supply and demand organization shall be jointly and severally liable for the performance of contractual obligations to the ordering agency.”

) On October 13, 2003, between the Plaintiff and the Plaintiff, the instant apartment section construction, machinery, and civil engineering works (hereinafter “instant housing section construction works”).

3) As to the construction contract (hereinafter “instant construction contract”)

(2) On November 24, 2003, the Plaintiff entered into a construction contract on the instant apartment building 3 sections of information and communications construction project with Defendant U.S. Communications, and Defendant City Telecommunications jointly and severally guaranteed the obligations of Defendant U.S. telecommunications under the said contract.

3) A merger with ELA as of April 1, 2010, after a mutual name was changed to Gato Gato Gato Gato Gato Gato Gato Ga to Gato Ga to Gato Gato Ga to Ga to Ga to Ga to Ga to Ga to Ga to Ga to Ga to Ga to Ga to Ga to Ga to Ga to Ga to Ga to Ga to Ga to Ga to Gato

) The Postal Construction Industry and the Postal Construction Industry (former trade name: New Construction before and after the change, hereinafter referred to as the “Postal Construction Industry” in total.