1, Siweituxin: Born out of central enterprises, it was established in 2002, formerly a subsidiary of China Siwei Surveying and Mapping Technology Company established by the State Bureau of Surveying and Mapping. It is a high-tech enterprise that has been committed to the development of geographic information industry for a long time.
2. Zhonggong Hi-Tech: It is the only A-share listed company under the Highway Research Institute of the Ministry of Communications, and it is the first editor-in-chief of the "Pilot Implementation Guide for Intelligent Networked Vehicle Access and Road Access (Trial)".