The G25 Changshen Expressway is the “vertical three” line of the “nine vertical, five horizontal, one ring, seven continuous” highway network in Shandong Province. The high-speed highway passes through Junan County for 15 kilometers, but there is no interchange, which results in the length of the area The Shenzhen-Shenzhen Expressway can only communicate through Linyi East and has a long bypass distance. After the completion of the Shilianzi interchange and connecting line project in Junan County, a service-based interchange will be formed between the Juxian hub in the northwest of Junan County and Hedong Interchange. The project plans to set up a total of 1 interchange, connecting line 17.280 Kilometers. Reconstruction of Changshen-Shenzhen Expressway is 1130 meters, and the total length of the ramp is 2710 meters. There are 758 meters / 1 bridge across the line, 193 meters / 1 bridge across the ramp, 284 meters / 4 bridges in the middle, 2 wide channels, 46 culverts (including 1 connection), and a construction period of 18 months. In order to ensure the smooth progress of the tasks of the engineering vehicles, SHANDONG OUJIN ENGINEERING MACHINERY CO.,LTD conducted strict inspections in all aspects on the vehicles participating in the project at the Oujin Machinery Test Field.