Construction Co., Ltd. (hereinafter referred to as the "Ticheon National Land Management Office") was awarded a contract for the construction of the Cr. 17 national highways 17-Tr. Cr. Cr. C. H.-T.

On April 8, 2013, Song Construction entered into a contract for the supply of materials with a limited liability company for the state-run industry (hereinafter referred to as the "state-run industry") to provide materials equivalent to 303,200,000 won (including value-added tax) for the said construction, and entered into an agreement for the direct payment of subcontract consideration with the net thousand national land management office and the state-run industry on the same day.

At the same time, on April 8, 2013, Songcheon Construction entered into a subcontract agreement between the Defendant and the Defendant on the construction work for which the Plaintiff was awarded a contract with the Defendant for the construction work for the period of the construction work to be subcontracted to the Defendant at KRW 491,10,000 (including value-added tax), and entered into an agreement on the direct payment of the subcontract price with the Defendant on the same day.

On June 20, 2013, the Defendant entered into a sub-subcontract with the Plaintiff on June 20, 2013, with the content that the news reporting expansion system construction (hereinafter referred to as the “construction of this case”) among the road construction works between the 17th National Highway 17-O-O-O-O-O-O-O-O-O-O-O-O-O-O (including value added tax) is re-subcontracted

The Plaintiff started the instant construction and received KRW 130,640,000 for the first progress payment around August 2014, after starting the instant construction, supplying and installing the blocket in India, installing a railing material and floor board, installing a block poppy, etc.

[Ground of recognition] In light of the above facts without any dispute, Gap evidence Nos. 2 and 3, Eul evidence Nos. 1, 2, and 3, Eul evidence Nos. 1, 2, and Gap's testimony, and the purport of the whole pleadings, the defendant is obligated to pay to the plaintiff 50,600,000 won (=187 million won - 136,400,000 won) accrued out of the construction price of this case, and delay damages therefor, unless there are special circumstances.

On the other hand, the Plaintiff’s additional construction cost of KRW 7,865,00, and cost of KRW 2,615,000 for the occurrence of the tax invoice.