1. The Plaintiff:

A. Defendant A case construction development Co., Ltd. and Defendant B Co., Ltd. jointly and severally KRW 30,550,000.

1. The following facts do not conflict between the parties, or may be acknowledged by taking account of the whole purport of the pleadings as a whole in each entry in Gap evidence 1, Gap evidence 2, Gap evidence 10, 11, and Eul evidence 4 (including branch numbers), Gap evidence 10, and Eul evidence 4.

The Plaintiff is a personal entrepreneur who engages in construction machinery leasing business in the name of the Plaintiff, and the Defendant AD Construction Development Co., Ltd. (hereinafter “Defendant AD Construction”) is a company with the purpose of inspecting and strengthening the facilities. The purpose of Defendant B D D D D D D D D is a company with the purpose of manufacturing and installing parking equipment and manufacturing, etc., and Defendant B Co., Ltd. (hereinafter “Defendant B”) is a company with the purpose of civil engineering and construction business.

B. 1) On January 2013, 2013, Sub-council E is a new construction work for the 4th underground floors, 1, 2nd class neighborhood living facilities, and business facilities buildings on the ground of 1,077m2 in Bupyeong-gu Incheon Metropolitan City owned by it against Defendant B (hereinafter “new construction work”) on the ground of 1,077m2.9m2.

(2) On January 21, 2013, Defendant B issued an order for steel structure reinforcement works among G new construction works; Defendant B entered into a subcontract agreement (No. B. 4) with the contents of the subcontract for the period from January 22, 2013 to August 31, 2013, setting the construction cost of KRW 1,067,00,000, and the construction period of the steel structure reinforcement works among G new construction works.

3) On March 4, 2013, Defendant B entered into a subcontract agreement (Evidence B B) with the effect that the steel frame construction among the new construction works was subcontracted during the period from March 5, 2013 to August 31, 2013, with respect to Defendant Dong-dong during the period from March 17, 2013 (hereinafter “instant construction site”). C. The Plaintiff’s construction equipment rental agreement between March 17, 2013 to October 17, 2013 (hereinafter “instant construction site”); and

(B) Around 48,550,000 won (excluding value-added tax) out of the rental of construction equipment equivalent to the aggregate of 60,750,000 won, such as Crain.