Member login system, card operation - card, Card only need to input the card number, the system will automatically calculate the card parameters, such as return ratio and refundable amount, enter the password confirmation, can return card. Remark: 1. The card if need poundage, will deduct fees first, then back to the customer, if the balance is insufficient, will return card failure. 2. Retired card can no longer be used by default, if you need to use the card again, please open loop card mode.