1. The Defendant (Counterclaim Plaintiff) shall pay to the Plaintiff (Counterclaim Defendant) KRW 229,784,50 as well as the full payment from December 23, 2017.

A principal lawsuit and a counterclaim shall be deemed simultaneously.

1. Basic facts

A. The Plaintiff is a company running the pipe equipment and air conditioning equipment construction business, and the Defendant is a non-corporate company that consists of the representatives of buildings elected by the occupants for the management of highyang-gu A apartment (hereinafter “instant apartment”) and its incidental facilities and its site.

B. On June 2017, the Defendant announced a bid (hereinafter “instant bid”) to implement the project to replace the hot water supply and demand pipe (hereinafter “instant construction”). At the time of the instant bidding, the Defendant provided the bidder with the site site report (hereinafter “instant site report”) on the bidders at the time of the instant bidding, and the main contents are as follows.

The site site descriptions

1. Title of the business: Construction of water supply or replacement of water supply pipes;

3. The purpose of the construction is to find the most economic and reasonable means to resolve the damage of pipes from time to time due to the severe corrosion of corrosion and the increase in the corrosion of pipes due to the deterioration of pipes inside the pipes, and to increase the cost of repairing and maintaining water and the generation of green products, and to increase the economic loss and inconvenience of residents due to the decrease in water pressure of water supply so that the economic loss and inconvenience of residents can be increased, and to reflect them in the construction;

(w) the number of units of construction 1) the outlined number of units: 3 dong 2: 354 households, 16-18 3 above ground: 4) the current water supply method: the current heating method: the district heating system.

5. Details of the scope of the construction project;

8. 1) The removal of existing unused pipes related to water supply and hot water supply 1) all - the removal of indoor steel-explosion / pumps / machine room/ common ditch / underground / high-end indoor fire extinguishing pipes 2) the removal of unused water tanks is excluded from the removal in cases where, with the entrance pipes, it is difficult to remove them after being concealed from the work of using the existing water supply pipes in the PD, or where it is inevitable to remove them due to concealment in the PD (the same as when there is pipelines in the existing upper upper-rise household room).