How is the quality of the huge waves busy at both ends?

Big waves are busy at both ends and the quality is good. Both sides of the huge wave are busy, commonly known as backhoe loaders, because it has a unique structure. The loader is in front and the excavator is behind. You only need to turn the seat in the construction site to complete the role conversion from loader to excavator. Two-way drive at both ends, partial lateral movement of excavator and 360-degree rotation of turntable are all patented technologies.