1. The Defendants are jointly and severally and severally liable to the Plaintiff for payment of KRW 906,440,280 and the period from May 27, 2015 to June 22, 2016.

1. Determination as to the claim

A. The following facts can be acknowledged in light of the respective descriptions of Gap evidence Nos. 1, 3, 5, and 6 (including branch numbers) and the purport of the whole pleadings.

1) 원고는 아스콘 생산 및 판매업 등을 하는 회사이고, 피고 영기종합건설 주식회사는 토목건축공사업 등을 하는 회사이며, 피고 동화건설 주식회사는 토목, 건축, 전기, 공사업 등을 하는 회사이다. 2) 피고들은 삼부토건 주식회사(이하 ‘삼부토건’이라고 한다)와 공동으로 공동수급체를 결성하고(이하 삼부토건과 피고들이 결성한 공동수급체를 ‘이 사건 공동수급체’라고 한다) 삼부토건을 대표자로 하여 2008년 10월경 국토해양부 대전지방국토관리청과 사이에 천안시 국도대체우회도로(배당-음봉) 건설공사(이하 ‘이 사건 공사’라고 한다)에 관한 도급계약을 체결하였다.

3) The Plaintiff is a supply contract for construction materials related to the instant construction project between December 18, 2012 to February 27, 2014 (hereinafter “each supply contract of this case”) with the instant joint supply and demand organization on three occasions from December 18, 2012.

Upon entering into each of the instant supply contracts, the Plaintiff supplied construction materials (ices) equivalent to KRW 8,241,743,900 in total from December 31, 2012 to December 30, 2014 under each of the instant supply contracts. B. According to the aforementioned facts, the instant joint supply and demand agreement is deemed to constitute a partnership under the Civil Act (see, e.g., Supreme Court Decision 99Da49620, Dec. 12, 2000). Meanwhile, barring any special circumstance, a partnership creditor is entitled to claim reimbursement either in proportion to the share of each member, or in equal terms, against each member’s debt, and if the partnership debt is incurred due to an act of engaging in commercial activities for all of the members, the joint and several liability of each member shall be determined by applying Article 57(1) of the Commercial Act.