customers who have already held credit cards can submit an application form and attach new financial documents to upgrade their gold cards. Ways to upgrade: 1. Download and fill in the gold card application form through online banking (some types of cards can be applied directly through online banking without printing), and send the certificate of new financial resources to the collection room on B1 floor of the operation center of China Merchants Bank Credit Card Center, No.686 Lai 'an Road, Pudong New Area, Shanghai, 2121. 2. Fill in the gold card application form at the counter with the supporting documents of new financial resources.