The principal cardholder must apply for a temporary increase in the supplementary card limit. You can use Bank of China mobile banking, "Bank of China Credit Card" WeChat official account, Colorful Life APP, personal online banking, or Bank of China credit card customer service hotline 4006695566 If you apply through other channels, Bank of China will handle the application for you based on your card usage.

The above content is for your reference, please refer to actual business regulations.

If you have any questions, please feel free to consult Bank of China’s online customer service.

You are sincerely invited to download and use Bank of China Mobile Banking APP or Bank of China Cross-border GO APP to handle related businesses.