If it is a single-currency credit card of China Merchants Bank UnionPay, it cannot be changed to a dual-currency credit card. Due to the different nature of different types of cards, the credit card you already have cannot be directly converted into other types of cards at present. If you need to apply for other types of cards, it is recommended that you re-fill in the relevant card application form to apply. If necessary, you can keep the card you already have.