1. Defendant B Co., Ltd.: (a) with respect to KRW 294,642,648 and KRW 5,809,025 among the Plaintiff, from July 26, 2016, and KRW 15,180.

1. Basic facts

A. The Plaintiff is a person engaged in exhibition and event agency business under the trade name of “D,” Defendant B (hereinafter “Defendant B”) is a company established for the purpose of developing, assembling, manufacturing, and selling mobile communications, radio communication equipment parts, equipment parts, etc., and Defendant C (hereinafter “Defendant C”) is a company established for the purpose of other company’s stocks or equity investment business.

B. On July 25, 2016, the Plaintiff carried out the E Program (hereinafter collectively referred to as “the instant prior event”). On July 20, 2016, the Plaintiff entered “Defendant B” as the client, and written a written estimate calculated by KRW 58,090,255 (excluding value added tax) with respect to the instant prior event, and sent the said written estimate to Defendant B’s agent F and Vice-Chairperson of the Global Strategy TF, by e-mail on the 22th of the same month. On the 25th of the same month, the Plaintiff issued an electronic tax invoice stating the supply value of KRW 58,090,255, the tax amount (value-added tax), the total amount of KRW 5,809,025, the amount of KRW 63,890,280,00, and the amount of KRW 585,50,050 on September 20, 2016.

C. Around August 2016, the Plaintiff performed the production (hereinafter “instant CI production”) of each company of Defendant B, Defendant C, and H (hereinafter “H”) (hereinafter “H”). On September 26, 2016, the Plaintiff: (a) calculated the estimate of the CI production by entering Defendant B as the client; (b) calculated the estimate of the CI production as KRW 4,600,000 (excluding value-added tax) by entering Defendant C as the client; and (c) calculated the estimate of the CI production as the client (excluding value-added tax) by 4,025,00 won (excluding value-added tax); and (d) sent each quotation calculated by 5,175,000 won (excluding value-added tax) with H as the client.

Defendant B is jointly developed by Defendant B at the Gangnam-gu Seoul Building from October 26 to October 28, 2016.