1. The Defendants are jointly and severally and severally liable to the Plaintiff for 33,176,350 won and the period from August 12, 2017 to October 17, 2017.

In the name of “D”, the Plaintiff engaging in the retail business of steel products and construction materials sold the construction materials equivalent to KRW 40,176,350 to the Defendants who are engaged in the construction business on July 2016, and the fact that the unpaid price out of the above purchase price was 33,176,350 as of August 11, 2017 is either a dispute between the parties or can be acknowledged by the statement in the evidence A1 through 5.

Therefore, the Defendants are jointly and severally liable to pay to the Plaintiff the amount of KRW 33,176,350, and damages for delay calculated at the rate of 6% per annum under the Commercial Act from August 12, 2017 to October 17, 2017, which was served on the Defendants by the original copy of the instant payment order, and 15% per annum under the Act on Special Cases Concerning Expedition, etc. of Legal Proceedings from the following day to the date of full payment.

The plaintiff's claim of this case is accepted.