Ordinary. Established in 2007, Lanzhou Changjia Huizhi Technology Co., Ltd. (formerly Lanzhou Changjia Digital Surveying and Mapping Co., Ltd.) is a high-tech private enterprise with national surveying and mapping grade A, national land planning grade B, agricultural comprehensive development ecological engineering design grade B and engineering consulting qualification. This is a formal company. The company is committed to providing intellectual support for national development and reform, natural resources, agriculture and rural areas, ecological environment, housing and urban-rural construction, transportation and water conservancy departments.