The defendant.

A. From June 2012 to October 2013, the Plaintiff engaged in the business of manufacturing plastic-type products was requested by the Defendant as a gold-type or automobile parts manufacturing business chain, and was supplied with materials and metal by the Defendant, and supplied the Defendant with the automobile parts after manufacturing them.

B. The Plaintiff and the Defendant traded with a set of temporary unit price when manufacturing parts of an automobile model to be newly launched. If the automobile enters the two-dimensional mass production system, the Plaintiff and the Defendant settled the price for the goods already paid at a fixed unit price and then traded with a fixed unit price.

C. From June 2012 to May 2013, 2013, the Plaintiff supplied the Defendant with “Y290 FOG 1273-5007 (LH)” products 19,874, and “Y290 FOG 1273-5008 (RH)” products 39,844 (the sum of the above two products combined) with “the product” (the sum of the two products) and paid the price for the goods with KRW 920,00. Accordingly, the Defendant determined that the fixed unit price of the product between the Plaintiff and the Plaintiff was KRW 1,600, and the Defendant determined that the fixed unit price between the Plaintiff and the Plaintiff was KRW 140,40,00 after deducting 10% of the fee from the fixed unit price with the above original office.

From June 2012 to July 2013, the Defendant deducted KRW 7,673,637 from the price of the goods to be paid to the Plaintiff as the discount fee for the bill, and paid KRW 8,094,447 to the Plaintiff from August 2013 to October 2013 (i.e., the total sales of the Plaintiff KRW 47,59,297 - KRW 39,504,850 on October 24, 2015.

[Ground of Recognition] Facts without dispute, Gap evidence 1, 3-1 through 6, 4-1 through 6, 5, 6, Eul evidence 1, 2, and 3, the purport of the whole pleadings

2. The parties' assertion

A. The Defendant: KRW 3,094,447 (=8,094,447); KRW 5,00,000; KRW 7,673,637, which was unfairly deducted from the amount of goods unpaid to the Plaintiff.