The reason why express delivery in the United States cannot be returned may be due to customs clearance inspection, which is more time-consuming. Because the customs clearance process for express delivery is the most time-consuming, generally speaking, after the customs clearance is completed, the subsequent delivery will be faster. However, if it is detained by the customs, a random inspection requires the payment of fines, etc., it may be longer.
A very important feature of international express delivery is the difference in express delivery environments between countries, especially the differences in the soft express delivery environment. Different laws applicable to logistics in different countries make international express delivery much more complex than a country's domestic logistics, and may even block international express delivery.
Different economic and technological development levels in different countries will cause international express delivery to be supported by different technological conditions, and some areas may even be unable to apply certain technologies at all, forcing a decline in the level of the entire international express delivery system; different countries have different standards , has also caused difficulties in international "integration", thus making it difficult to establish an international express delivery system; the customs and humanities of different countries have also greatly limited international express delivery.
International express delivery refers to the express delivery and logistics business conducted between two or more countries (or regions). The delivery business of letters, business documents and items between countries (or regions) is a transportation method that inspects and releases express items through border ports and customs between countries. After the international express parcel reaches the destination country, it needs to be transshipped again in the destination country before the express parcel can be delivered to the final destination.