What is the Difference Between Shipping and Mailing?

Express shipment refers to the process of quickly and efficiently transporting express shipments to their destinations under the unified organization, command and dispatch, and comprehensive use of various means of transport in accordance with the transportation plan. Express shipping mainly includes 3 modes of air transportation, road transportation and rail transportation. Each of the three modes of transport has its own characteristics, as well as its mode of operation, capacity and speed. ^[1]