What is the single number on Changji logistics list?

A series of numerical codes on the logistics receipt. Changji Logistics focuses on LTL logistics, maintaining the leading position in the Northeast logistics industry for many years, and has opened more than 800 business outlets, with perfect information level and various ways to place orders independently. Changji Logistics, the number code on the logistics receipt is a single number, probably 1 1 digit, and sometimes it contains letters. Through this single number, the location and status of logistics can be queried in real time, which is convenient for senders and recipients to grasp the express delivery situation in time.