Dual nozzles are suitable for scenarios that require a wider range of spray, such as lawn spray, cleaning agent spray, etc., on the other hand, the advantage of dual nozzles is that they can complete the spray task faster. At the same time, its spray range is wider, can meet some of the larger range of spraying tasks. However, dual nozzles also have some disadvantages. Because of its poor control, the scope of application is relatively small.