This is impossible, because credit card line sharing means that the same bank credit card held by the same cardholder uses a common line. The maximum amount that a cardholder can use is subject to the maximum amount of all credit cards under his name. For example, suppose you have three ICBC credit cards, a credit line of 3000, a credit line of 10000 and a credit line of 8000, then the total amount he can use is not 2 1000, but 10000.

For example, if you buy a bag of exactly 20,000 yuan, take out three ICBC cards, and use 1 10,000 credit card, or use 1 10,000. If you want to use the remaining two ICBC cards, you can't use them. Because your ICBC credit card limit is 1 10,000.

At present, credit cards of all banks in China are shared by quota, without exception. Therefore, if you apply for multiple credit cards in the same bank, the amount will not increase unless you apply for withdrawal.