To tell the truth, Sany's sales are stressful, and the salary paid by the machine directly hangs on the salesman's head. It is possible that you owe the company millions or hundreds of millions of money!
But if you have a strong personal ability, you can still do it.
There are too few fields for mining machines. The quality of Sany's mining machine is not so good, and it leaked oil before leaving the factory! Then I bought Komatsu's mining machine and took it apart for research. . . . Then it is called independent research and development. .....
Forget what I said!