Long arm excavators are suitable for the following special occasions:

河道清淤作業：由于長臂挖掘機可以在一定高度和半徑內靈活地進行操作，因此在河道清淤作業中得到廣泛應用。河道清淤需要挖掘大量的河砂和淤泥，長臂挖掘機在清淤作業時可以達到較高的效率。

River dredging operations: Due to the flexible operation of long arm excavators at a certain height and radius, they are widely used in river dredging operations. River dredging requires the excavation of a large amount of river sand and silt, and long arm excavators can achieve high efficiency in dredging operations.

高墻挖掘作業：長臂挖掘機可以在高墻上通過遠程控制來進行施工，彌補了人力無法到達的缺點，提高了施工效率。在高墻挖掘作業中，長臂挖掘機可以利用其多種功能挖掘斜坡和拋土，極大地方便了施工作業。

High wall excavation operation: Long arm excavators can be remotely controlled on high walls to carry out construction, making up for the shortcomings that cannot be reached by manpower and improving construction efficiency. In high wall excavation operations, the long arm excavator can use its various functions to excavate slopes and throw soil, greatly facilitating construction operations.

礦山、碼頭、倉儲、抗洪搶險及特殊的場合作業：長臂挖掘機是挖掘機械的一大突破性改造，具有非常大的實用價值。它是在車體支架及工作臂之間加裝一個加長臂，加長臂由原油缸支撐連接，并在加長臂上加裝了一個工作臂油缸及挖掘斗油缸。在駕駛室內外，相應的加裝了一套油缸的操縱系統，配合操縱工作臂油缸及挖掘斗油缸的伸縮作業，可使挖掘斗的活動范圍擴大一倍以上，達到的范圍更高、更深、更遠，特別適應礦山、碼頭、倉儲、抗洪搶險及特殊的場合作業。

Mining, docks, warehousing, flood control and emergency operations, and special occasions: Long arm excavators are a major breakthrough transformation of excavation machinery and have great practical value. It is equipped with an extension arm between the vehicle body bracket and the working arm, which is supported and connected by the original oil cylinder. Additionally, a working arm oil cylinder and a digging bucket oil cylinder are installed on the extension arm. A set of oil cylinder control system has been installed inside and outside the driver's cab, in conjunction with the telescopic operation of the operating arm oil cylinder and the excavation bucket oil cylinder, which can expand the activity range of the excavation bucket by more than double, reaching a higher, deeper, and farther range, especially suitable for mining, docks, warehousing, flood control and emergency operations, and special occasions.