The Great Wall cannon flood control drainage is mainly used for urban flood control, agricultural drought relief, municipal engineering and emergency drainage. The drainage flow is 500 m3/h. This large-flow drainage rescue vehicle belongs to a special operation vehicle. It is the form of a noise reduction power station by installing the generator unit in a compartment with sound insulation and noise reduction functions. It integrates drainage equipment and a drainage rescue mobile pump station integrated on the vehicle chassis. It is suitable for all-weather outdoor operation, with stable and reliable overall performance, portable and practical integrated operation, fast response and high drainage efficiency Various functions, convenient combination, wide use, high cost performance; One-stop service The company develops the design scheme of emergency rescue vehicles suitable for customers' needs. In the actual business process, we put forward the concept of one-stop service before, during and after sales based on customers' needs, which is reflected in not only providing product series with quality and quantity guaranteed and multiple functions, but also providing users with the most detailed whole-process services such as regular free maintenance, operation guidance and technical training.