1. The charges are different: the standard for slow mail is 5 yuan, and 2 yuan is charged for every 500g. The charging standard for postal express delivery is the starting price of 20 yuan, and for each subsequent increase of 500g, the price will be increased by 6 yuan 1.500km, 9 yuan 1.500km and over 2,500km 1.5 yuan.
2. Different modes of transportation: the mode of transportation of postal slow parts is land transportation, while the mode of transportation of postal EMS express delivery is mainly air transportation, and a small number will choose land transportation.
These are the main differences between express mail and slow mail. I hope it helps you.