The amount can be increased in a curved manner.

A curved line increase is to apply for another credit card at this bank on the basis of the original credit card. Under normal circumstances, applying for a gold card on the basis of a regular card can allow a curved line increase. If you apply for a regular card of the same level, the possibility of increasing the amount is very small. It is best to apply for a permanent increase.

The behavior of increasing the quota through application methods other than 800 calls is called curve quota increase.

For example, submitting a written application to the card center to request a limit increase is called a curve limit increase.

This is a term coined by cardholders, originating from "curve to save the country". It mostly refers to taking other actions to increase the credit card limit instead of calling the customer service number of the credit card center to request a limit increase.