We hold the "class a surveying and mapping qualification certificate" issued by the State Bureau of Surveying and mapping and the "class a comprehensive engineering surveying certificate" issued by the Ministry of construction, and are equipped with GPS receiver, total station, precision level, all Digital Photogrammetry Workstation, large area scanner, color plotter and other auxiliary equipment. Capable of photogrammetry and remote sensing, engineering survey, geographic information system engineering, cadastral surveying and mapping, marine surveying and mapping, geodetic surveying and mapping, real estate surveying and mapping, administrative area boundary surveying and mapping, etc.