Five. According to the map, there are five large machinery companies in xi 'an Gaoliang area, namely: Xi 'an Changji Machinery Manufacturing Co., Ltd., Shaanxi Ruitaite Machinery Co., Ltd., Gaoling Huang Da Machinery Engineering Co., Ltd., Xi 'an Gaohui Machinery Co., Ltd. and CCCC Xi 'an Road Construction Machinery Co., Ltd. Gaoling District belongs to Xi, Shaanxi Province, located in the hinterland of Guanzhong Plain in Shaanxi Province, north of Xi City. Because there is a Zheng Feng tableland in the territory, it is named Gaoling.