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The difference between Nanjing citizen card A and B

Different concepts and applicable groups. The concept is different: Nanjing citizen card A is a three-in-one citizen card, which is a three-in-one social security card, Jinling Tong card and bank card. Usually called social security card directly. Nanjing citizen card B card does not have social security function. Mainly used for merchant consumption and public transportation. Applicable people are different: Nanjing citizen card A is issued to Nanjing people who pay social security, and Nanjing citizen card B is issued to everyone.