Maritime Transportation
Maritime transportation is the most common international freight method, suitable for large - quantity goods and long - distance transportation. The advantages of maritime transportation are relatively low transportation costs, the ability to carry a large amount of goods, and its suitability for long - distance transportation. However, the disadvantages of maritime transportation are long transportation times and vulnerability to weather and sea conditions.

Air Transportation
Air transportation is the fastest international freight method, suitable for high - value, lightweight, and urgent goods. The advantages of air transportation are high speed, the ability to deliver goods to the destination in a short time, and its suitability for long - distance and long - haul transportation. However, the disadvantages of air transportation are high costs, limited transportation capacity, and the inability to carry a large amount of goods.

: Comply with the Regulations Concerning the International Carriage of Dangerous Goods by Rail (RID).
Rail transportation is suitable for the long - distance transportation of large - quantity goods. The advantages of rail transportation are relatively low costs, relatively short transportation times, and the ability to carry a large amount of goods. However, the disadvantage of rail transportation is that it is restricted by transportation routes and cannot reach all destinations.

Road transportation
Road transportation is suitable for the transportation of goods over short distances and in small quantities. The advantages of road transportation are its convenience, ability to adapt to flexible demands, and the capacity to transport small - batch goods. However, the disadvantages of road transportation are relatively high costs and significant impacts from road conditions and traffic congestion.

In summary, the choice of international freight mode depends on various factors such as the nature of the goods, transportation distance, transportation time, and cost. During the actual transportation process, issues such as international trade laws and regulations, and customs procedures also need to be considered. Therefore, a reasonable choice of international freight mode is crucial for the successful conduct of international trade.