1. All appeals filed by the Plaintiff (Counterclaim Defendant) against the principal lawsuit and the counterclaim by the Defendant (Counterclaim Plaintiff) are dismissed.

1. The plaintiff's grounds for appeal citing the judgment of the court of first instance and the defendant's grounds for appeal are not significantly different from the allegations in the court of first instance, and the fact-finding and judgment of the court of first instance are justified even if the evidence submitted in the court of

Therefore, the court's explanation on this case is identical to the part of the reasoning of the judgment of the court of first instance except for using the "business of measuring thickness, etc." of the second 2th 11 of the judgment of the court of first instance as "business of measuring thickness, etc.", and the "Article 374 (1) 1 of the Commercial Act" of the third 19 of the judgment as "Article 374 (1) 1 of the Commercial Act", and therefore, it is identical to the part of the judgment of the court of first instance. Thus, it is cited in accordance with Article 420 of the

2. In conclusion, the plaintiff's main claim of this case and the defendant's counterclaim of this case shall be dismissed in its entirety as it is without merit, and the judgment of the court of first instance is just in its conclusion, and all appeals against the plaintiff's main claim and the defendant's counterclaim are dismissed in its entirety as it is without merit. It is so decided as per Disposition.