1. The defendant jointly with C Co., Ltd. and shall pay to the plaintiff KRW 223,236,450 as well as its full payment from December 5, 2020.

According to the overall purport of the Gap evidence Nos. 1 through 3, the judgment as to the cause of the claim, the plaintiff supplied construction materials to the construction site of solar power infrastructure by C Co., Ltd. (the payment order finalized) from 2019 to October 31, 2020, and the defendant did not pay 223,236,450 won (including value added tax) out of the price of the material to the plaintiff even though he paid the price of the material with C Co., Ltd. to the plaintiff, so the defendant is jointly with C Co., Ltd., and as requested by the plaintiff, the defendant is obligated to pay damages at a rate of 12% per annum under the Act on Special Cases concerning the Promotion, etc. of Legal Proceedings from December 5, 2020 to the date of full payment.

2. The plaintiff's claim for conclusion is justified and it is so decided as per Disposition.