First of all, there are the following components to form the front of the card: 1. Card number 2. Validity expiration month/year: the expiration time when the card can be effectively used (the month is in the front and the year is in the back), which is also the time to renew the card. Send time. For example: "12/15" means the end of December 2015" 3. Pinyin/English name 4. Category identification

The reverse side has these components: 1. 24-hour service hotline 2. Magnetic strip 3. Signature column 4 and 7 digits