1. Inquiring about logistics information: You can inquire about the logistics information of packages, including the mode of transportation, departure date, flight number, etc., through the official website or the customer service hotline of the international express company. Usually, the logistics information of air parcels will include flight information, while sea parcels will have departure date and estimated arrival time.
2. Check the packaging type: different types of packaging are suitable for different modes of transportation. For example, document packages are usually transported by air, while liquids, powders, batteries and other items may be transported by sea or land.
3. Ask customer service: If the above methods can't judge the parcel transportation mode, you can directly consult the customer service of the courier company, and they will provide professional help and guidance.
It should be noted that international express transportation involves many links and different modes of transportation, and the final mode of transportation may be adjusted according to the specific situation. Therefore, when inquiring about logistics information or customer service, it is best to provide detailed package information and express delivery number in order to get a more accurate answer.