Keda Instrument Equipment Co., Ltd.

Xi'an Chenxiao Measure Instrument Experiment Instrument

Xi'an Kaida Instrument Co., Ltd.

Huazhong Experiment Yiqibu

Shaanxi Tiancheng Instruments of Surveying and Mapping Co., Ltd. (Geomatics Mansion Block C Shop)

Jinhua Experiment Instrument (Helenbergh Helen International Middle Area Shop)