1. Apply for a quota increase. You can apply for a limit increase from the card issuing bank. Bank of China has opened a very convenient limit increase channel for families studying abroad, and can easily handle the limit increase operation for you.

2. Deposit the corresponding foreign currency. You can deposit the corresponding foreign currency through the main card (such as US dollars on the US dollar card) to increase the available foreign currency limit. Note that you need to turn off the RMB accounting function and adjust the credit card to the corresponding foreign currency accounting so that the foreign currency can be deducted directly. VISA card generally refers to VISA. VISA, also translated as Visa, is a credit card brand operated and managed by Visa International Organization located in San Francisco, California, USA.