Yes, if it is a China Merchants Bank credit card, the principal cardholder can apply for a supplementary card through the following channels: Path 1: Apply for the principal card and supplementary card simultaneously. Please check the supplementary card when applying. Method 2: The main cardholder applies for supplementary cards for immediate family members. 1. Apply for a card online: The principal cardholder completes the application according to the steps on the website. 2. To apply for a card at a China Merchants Bank branch: the principal cardholder must bring the original identity document of the supplementary cardholder, and the supplementary cardholder does not need to go together. 3. For customers who already hold the main card, Palm Life can try to apply for supplementary cards for some cards, go to Card* Finance - Card Manager - slide up to the left - apply for supplementary cards.