1. Qinghai Haida Automobile Inspection Co., Ltd. is located in Hu Hai Avenue, Qinghai Biotechnology Industrial Park, Xining City, Qinghai Province. Founded in 2007, it is mainly engaged in automobile comprehensive performance inspection, accident vehicle identification, motor vehicle safety technical inspection, teaching and training; Automobile information consulting service; Technical service of construction machinery; Mechanical and electrical equipment testing.
2. Qinghai Goodnai Gas Cylinder Inspection Center is located in Railway Station Road, Chengguan Town, Huangyuan County, Xining City, Qinghai Province. Established on 202 1, mainly engaged in inspection and testing of special equipment.