1. The fact that the Plaintiff, who runs a trade business under the trade name of “C” from around 2008 to around 201, sold a bowling machine and a mining tape, etc. to the Defendant who runs a wholesale and retail business of sports supplies, does not have any dispute between the parties.

2. Determination as to the claim on the principal lawsuit

A. The Defendant is liable to pay the Plaintiff the aforementioned KRW 4,51,420 and delay damages, on the ground that there is no dispute between the parties as to the claim for the outstanding amount and the fact that the Defendant did not pay the remainder of KRW 3,000,000 and KRW 4,551,420, including the balance of KRW 1,551,420, while being provided with the bowling product by the Plaintiff.

B. 1) On March 26, 2010, the Plaintiff asserted that the Plaintiff supplied KRW 53,00 to the Defendant for the return of defective goods at KRW 53,00.3. The Plaintiff demanded return of defective goods and supplied KRW 361 to the Defendant for the replacement of 208 out of 214 return and supplied the Defendant again. Accordingly, the Plaintiff supplied KRW 719 (=316 208-214) to the Defendant. As a result, the Plaintiff supplied KRW 310 (719 - 409) to the Plaintiff, and KRW 1643,00 won (310 x 55,000) to the Defendant, and KRW 30,000,000 for the supply of defective goods at KRW 30,000,000,000 for the delivery of defective goods at KRW 134,30,000,000 for the Defendant’s sale of defective goods at KRW 214,21,21,241, and246, respectively.