1. Whether the Bank of Communications will increase the card limit depends on the situation. For example, the previous gold card amount is 30,000 yuan, and the additional card is also a gold card, so the actual card amount is related to the credit qualification of the user. In other words, the number of add-on cards may increase, decrease or remain the same. The user's add-on card is a platinum card, so the amount will definitely be higher than the previous gold card.

2. Therefore, users need to apply for a high-grade credit card to increase the total credit limit of the credit card.

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