You cannot apply for a main card, but you can apply for a secondary card. The main card must be 18 years old or above to apply for it. The secondary card is linked to the main card and has some practical restrictions.

The application age for supplementary cards is inconsistent among banks. Some stipulate that you must be 16 years old, and some stipulate that you must be 13 years old. Please inquire with the bank before applying.