What are the first four digits of Guangzhou Tian Tian Express Bill Number?

The daily express number consists of 14 digits, and generally starts with 6**, 5*, 00*, 883, 886, 998, 550, 530, 666, 888 and 776.

The courier number contains the detailed information of the express mail, usually consisting of numbers and letters, and is the unique identification code of the express parcel. The courier number is convenient for the courier company, the sender and the recipient to track the courier information in real time.