The black card of postal service is a green cartoon, the gold card of China Postal Savings is a gold card, and the khaki ordinary savings card is not a tripod.

Black Card is a green cartoon IC card debit card issued by China Postal Savings Bank to customers who meet relevant evaluation criteria. Huang Ka savings card is a kind of debit card, which is a financial transaction card issued by banks to provide financial services for depositors. .

Its main function is to deposit and withdraw money at networked ATMs and bank counters and spend it at networked POS machines.