Shanxi Chaorui Instruments of Surveying and Mapping

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

Middle Haida Huanyu Instruments of Surveying and Mapping

Huanyu Feixing Instruments of Surveying and Mapping

Ruida Instruments of Surveying and Mapping

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