GENEVA, March 10 -- DL E&C CO., LTD. ((Pyeongdong) 134, Tongil-ro,Jongro-guSeoul 03181), 디엘이앤씨 주식회사 (서울특별시종로구통일로 134 (평동)), SUNGGEONENG ((LandMark1, Cheongdangdong) 706ho 3, Cheongsu 5-ro,Dongnam-gu, Cheonan-siChungcheongnam-do 31198), (주)성건엔지니어링 (충청남도천안시 동남구청수5로 3, 706호(청당동, 랜드마크원)) filed a patent application (PCT/KR2024/012806) for "SMARTPHONE-LINKED IOT CRACK GAUGE AND CRACK MEASU...