The advantage of international air transport special line is that it can be dispatched to door service and clear customs service.
The advantage of international maritime special line is that the price is favorable, and the time limit may be slow. International maritime special line can be dispatched to door service, including customs service.
The advantage of destination dedicated line is that the service of special line package tax and customs clearance is carried out according to different destinations. It can also be door-to-door service. The time limit will be faster.