China Bank will send SMS or email to invite high-quality customers who have bank accounts in China. Quality customers generally refer to customers who have purchased wealth management products or have large deposits in BOC.

China Bank has held many activities to recommend new customers to apply for old customer cards. That is, the old customers who have already held the China Bank credit card recommend the customers who have never held the China Bank credit card to apply for the card. When new customers apply for a card, they should fill in the relevant information of the recommender, which is equivalent to the credit card recommendation code. Credit card recommendation code is used by banks to identify the identity of referees, which can be in the form of QR code, mobile phone number, random number, text and so on.

It is a marketing method for banks to recommend cards to old customers, which not only saves manpower and material resources, but also attracts new customers. For applicants, if they apply for a card under the recommendation of an old customer of BOC, it is easier to approve the card successfully and get a higher quota; For the recommender, if the new customer is recommended to apply for a card successfully, he can get a reward from the bank.