1. The Defendants are jointly and severally liable to the Plaintiff for KRW 21,192,90 and KRW 10,659,300 among them, from February 1, 2015, and KRW 10,533.

1. Comprehensively taking account of the purport of each statement in Gap evidence Nos. 1 through 3 (including paper numbers), the fact that the plaintiff entered into a contract for the supply of ready-mixed with the defendant A Co., Ltd. (hereinafter "the defendant Co., Ltd.") on December 13, 2014 and supplied ready-mixed to the defendant Co., Ltd. from around that time to March 13, 2015. The above contract stipulates that "The payment of ready-mixed in the following month after the claim for the end of the month." The defendant B jointly and severally guaranteed the defendant Co., Ltd.'s obligation to the plaintiff; the defendant Co., Ltd. paid 30,659,300,000 won out of 40,659,300 won out of 10,659,300 won out of 10,659,300 won and the remaining 10,305,000 won out of 10,305

2. According to the above facts of determination, Defendant B, a principal debtor, and joint and several sureties, jointly and severally, jointly and severally liable to pay to the Plaintiff KRW 21,192,90 (= KRW 10,659,300, KRW 10,533,60) and to pay KRW 10,659,300, whichever is the date following the due date for payment of the agreement, from February 1, 2015 to January 1, 2015; and from May 1, 2015 to June 25, 2015 to the date of delivery of the original copy of the payment order of this case from May 1, 2015 to June 24, 2015 (for Defendant Company, KRW 10,53,600, the due date for payment of KRW 600,00,00,000 each of the following special cases, as the Plaintiff seeks.

3. citing the Plaintiff’s claim for conclusion