What's the relationship between port machines and cars?

There are generally two kinds of port machines that follow the car:

1, deliveryman, who is responsible for loading and unloading the goods on the car, usually costs 2500 yuan a month, but the commission should be increased, otherwise it is not cost-effective.

As a escort, he is only responsible for the goods from the starting point to the destination, not for loading and unloading, but he must hand over the goods clearly. Escort on the train, the salary is more than 5000. Other chaperones will be on 1500 for one month. Look at the company recruitment information specifically.