1. Revocation of a judgment of the first instance;

2. The plaintiff's claim, including the part expanded in the trial, is all dismissed.

1. Basic facts

A. The Plaintiff is a company established on November 16, 2005 for the purpose of manufacturing, wholesale, retail, etc. of fishery products-type machinery and materials. The Defendant is a company established on November 1, 2002 for the purpose of manufacturing, selling, etc. plastic products.

B. From August 2011, the Plaintiff entered into a contract with the Defendant to be supplied with polyethyl (PE) pipes from the Defendant for the production of the sericultural fish farm. From August 18, 2011 to April 25, 2013, the Plaintiff entered into a contract with the Defendant to be supplied with polyethyl pipeline. The Plaintiff manufactured a polyethyl pipeline and supplied it to the fishery farmer by using it.

C. 1) There are the pipes constituting the bones ebral ebraries and manufacturing methods, etc. 1) the ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral ebral eve, etc.).

3 A statement of "a person who is engaged in the cultivation and improvement of inland wave fish farming facilities" issued by the Ministry of Oceans and Fisheries.