Nanjing Longjun Surveying and Mapping Instrument Co., Ltd. is a company that sells, wholesales, services and repairs surveying and mapping instruments as a whole,Adhering to the customer-centric and user-first principle, we develop system solutions for our customers that meet market requirements. At present, we have mature solutions in the tunnel, monitoring, rail, ship, inspection and steel structure industries.Our main hardware products are UAV, 3D laser scanner, gyroscope, RTK, total station, latitude and longitude meter, level, handheld GPS, unmanned ship, multibeam, bathymetry and industrial surveying and mapping products, mainly acting as an agent for SOKKIA, FIOF, HI-TARGET,Leica, CHCNAV, Trimble and other famous brands at home and abroad.