The supplementary card means that the main card holder can give a relative or spouse a credit card attached to the main card. The supplementary card and the main card*** enjoy a credit limit and can enjoy the same consumption points and preferential activities. This makes it easier for family members to make purchases while also establishing a personal credit record for them.

The functions of the supplementary card are basically the same as those of the main card, but it should be noted that the main card holder needs to supervise the consumption of the supplementary card holder to avoid excessive consumption leading to excessive expenditures. In addition, because the secondary card holder and the primary card holder share the same credit limit, if the secondary card holder forgets to pay the outstanding balance, it will affect the primary card holder's credit score.

Applying for an additional credit card is more convenient than applying for a new credit card, and generally only requires providing some basic personal information. At the same time, the supplementary card is also a financial management tool. You can check the consumption records of the supplementary card holder at any time to better understand the family's consumption status. In short, the supplementary card is a convenient and practical financial management tool, but you need to understand the operating rules and precautions of the supplementary card before using it.