Zhiqiang Instruments of Surveying and Mapping

Zhongrui Instruments of Surveying and Mapping (Machine Tools Plant Yi Dormitory Shop)

Huanyu Feixing Instruments of Surveying and Mapping

Xinhua Instruments of Surveying and Mapping Meter (Taiyuan Electric Power Supply Bureau Dormitory Shop)

Shanxi Chaorui Instruments of Surveying and Mapping

Ruida Instruments of Surveying and Mapping