1, because of the small friction, the traction or thrust required to move very small;
2, good maneuverability, accurate positioning;
3, the friction of the ground is small, it can protect the ground well;
4, simple maintenance, good safety performance;
5, according to the weight of the object to be transported and volume of the combination of the weight of the transported objects, suitable for both large and small weight
6, shockproof, non-polluting, can be used in the environmentally demanding (such as: pharmaceutical factories, biochemical plants) occasions;
7, volume size can be combined, light weight, easy to carry or install and use;
8, can be used alone, without the need for jacks, hand-cranked satchel top of the cooperation.