The service providers of international air transportation work directly with major airlines, and the cost is relatively low, so the freight is naturally lower than the express way. For example, larger and heavier cargo will have an advantage in billing by air freight. The main body of air transportation is that major international airlines can do it as long as there is an airport, and there are almost no blind spots. Unlike express delivery, they charge based on distance, while express delivery sometimes depends on the local trade. How much billing. For example, countries such as Eastern Europe, Northern Europe, West Asia, Latin America, and Africa are all positioned as remote countries in express delivery services, and the billing is particularly high. In this case, we choose air transportation.