What does the Agricultural Bank of China contract debit card mean?

If ABC's business is used, e-banking refers to the banking services provided to customers by ABC through communication channels or public networks open to the public, as well as the private networks established by banks for specific self-service equipment or customers. It mainly involves personal online banking, pocket banking and SMS banking (excluding message service). Jinsui Debit Card is a physical medium payment tool issued by Agricultural Bank of China, and overdraft is not allowed.