1, Zhu Wenfeng Surveying and Mapping Instrument Maintenance Service Department: Located at No.26, Gong Jian Lane, Guangming Road, Tianshan District, Urumqi, Xinjiang Uygur Autonomous Region, it is an enterprise mainly engaged in the maintenance of motor vehicles, electronic products and daily products.
2. Jiazheng Surveying and Mapping Instrument Co., Ltd.: Located in Shayibake District, Urumqi, Xinjiang Uygur Autonomous Region, it is a chemical surveying and mapping instrument shop that mainly sells, repairs and verifies surveying and mapping instruments and related products, so it can repair infrared level.