In international shipping, container ships, bulk carriers, tankers and ro-ro ships are the most common types of cargo ships, and their carrying capacity ranges from several thousand tons to hundreds of thousands of tons.

The average transportation time for sea transportation is about 15 to 45 days, while that for air transportation is about 3 to 7 days. However, this is only theoretical data, and uncontrollable variables in the actual transportation process often increase uncertainty.

In the second year of the outbreak, the shortage of containers has become more serious, and international shipping has slowed down further, causing container prices to soar. The combined effect of these factors has led to a rapid increase in international shipping costs.

International transportation is mainly divided into 7 steps including: export consignment, origin processing, export customs clearance, cargo transportation, import customs clearance, destination processing and import consignment.

Express services usually provide the fastest delivery and may take 1-3 days. Air freight is a fast method of international freight, usually taking 5-10 days. Ocean shipping usually takes longer and may take 20-45 days or even longer.