1. Variable arrangement of the pipe makes the production craft process more reasonable;
2. The system is sealed and lead to few flying dust, it benefit for environment protection;
3. Few movement parts, convenient maintenance, automatic control can be realized easily;
4. High efficiency of transportation reduces the cost of packing, loading and unloading;
5. Make the material avoid being damped, polluted, damaged, and mixed with other material, the quality of conveying is assured;
6. Various operation process can be realized meanwhile for the conveying, such as mixture, crush, grade, dryness cooling, and dust collection;
7. Send the material from couple place to one place and from one place to couple place, realize far distance operation;
8. For the material with erratic chemical character, can adopt inertia gas conveying.