Yuantong single number consists of 10 alphanumeric characters, which usually start with 1**, 2**, 8** or D**. The universal serial number consists of 12 digits, and it usually starts with 268**, 368**, 58**, etc. EMS single number consists of 13 letters and numbers, generally the first and last two are letters, and the middle is a number. The SF number is composed of 12 digits, which usually starts with the last three digits of the area code.
Read the full text