1. The Defendants are jointly and severally liable to the Plaintiff for payment of KRW 89,772,467 and the period from March 11, 2017 to November 28, 2017.

Comprehensively taking account of the respective descriptions in subparagraphs A through 7 and the overall purport of the testimony and arguments by witnesses C, the Plaintiff supplied gas, etc. to Defendant A and Non-Party D during the period from August 31, 2015 to March 10, 2017 and did not receive any balance of goods equivalent to KRW 89,772,467 among them. Defendant B provided joint and several sureties with respect to the gas supply price to the Plaintiff by Defendant A and Non-Party D within the limit of KRW 90 million. Defendant A also provided joint and several sureties with respect to the gas supply price to the Plaintiff by the Plaintiff. The Defendants jointly and severally paid to the Plaintiff KRW 89,772,467 as well as KRW 467 as well as KRW 89,72,467 as to the gas supply price to the Plaintiff by the Plaintiff. From March 11, 2017 to March 10, 2017 to KRW 50% of the annual damages for delay calculated by the following day of each lawsuit.

Therefore, the plaintiff's claim of this case is justified and it is so decided as per Disposition.