... The key parts, like high-pressure pump, precise nozzles, gas components and so on is imported.Metal printed inside the tank ... washing device and Side dead-angle-washing device.Options: Washing Road Surface, Multi-Angle High Intensive Sullage Cleaning, Highway Railings ... Humidity and Reducing Dust, Low & Flat high water flow washing, road spray, right & Left Washing Flowers, High-Pressure Spray Gun ...