Yonghui Equipment Rental Service Department. According to a query on 58.com, it was learned that the place where Duyun rents fiber splicing machines is Yonghui Equipment Rental Service Department, which was established on 2021-09-02 and is located in Yundong Commercial and Residential Community, Yundong Town, Yundong City, Qiannan Prefecture, Guizhou Province. Duyun City, the capital of Qiannan Buyi and Miao Autonomous Prefecture, is located in the south of Guizhou Province, adjacent to Danzhai County and Sandu Shui Autonomous County to the east.