1, postal express refers to postal standard express parcel. There are three types of postal express delivery services: EMS, postal standard parcels and postal express parcels.

2. Postal express service is a special postal service provided by postal departments in various countries. This service enjoys priority in postal, customs, aviation and other departments in various countries. It delivers international and domestic urgent letters, documents, financial bills, commodity samples and other documents and articles to users with high speed and high quality.