Nanjing Res Inst of Surv, Map & Geotech Investig, Co., Ltd. develops geographic information software. Its business includes surveying and mapping supervision, real estate surveying, third-party surveying, terrain surveying, geographic information system data processing, mapping, control surveying, aerial photogrammetry, remote sensing image processing, cadastral survey, and geographical national survey and monitoring. The company was founded on April 8, 1991 and is headquartered in Nanjing, China.